System Register Tables

Register Definitions

When programming the an OCS, data is stored in memory that is segmented into different types. This memory in the controller is referred to as registers. Different groups of registers are defined as either bits or words (16 bits). Multiple registers can usually be used to handle larger storage requirements. For example, 16 single-bit registers can be used to store a word, or two 16-bit registers can be used to store a 32-bit value.

Types of Registers
%AI = Analog Input	16-bit input registers used to gather analog input data such as voltages, temperatures, and speed settings coming from an attached device.
%AQ = Analog Output	16-bit output registers used to send analog information such a voltages, levels or speed settings to an attached device.
%D = Display Bit	These are digital flags used to control the displaying of screens on a unit which has the ability to display a screen. If the bit is SET, the screen is displayed.
%I = Digital Input	Single-bit input registers. Typically, an external switch is connected to the registers.
%K = Key Bit	Single-bit flags used to give the programmer direct access to any front panel keys appearing on a unit.
%M = Retentive Bit	Retentive single-bit registers.
%Q = Digital Output	Single-bit output registers. Typically, these bits are connected to an actuator, indicator light or other physical outputs.
%R = General Purpose Register	Retentive 16-bit registers.
%S = System Bit	Single-bit bit coils predefined for system use.
%SR = System Register	16-bit registers predefined for system use.
%T = Temporary Bit	Non-retentive single-bit registers.

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%S Registers

S#	Name	Predefined I/O Name	Notes
%S1	First Scan	FST_SCN	On for 1 scan only each time the program is first run
%S2	Network OK	NET_OK	If on, the Network is OK
%S3	10ms pulse	T_10MS	Cycling pulse that is high for 5ms and low for 5ms
%S4	100ms pulse	T_100MS	Cycling pulse that is high for 50ms and low for 50ms
%S5	1 second pulse	T_1SEC	Cycling pulse that is high for 500ms and low for 500ms
%S6	I/O OK	IO_OK	If on, the I/O system is OK
%S7	Always On	ALW_ON	This bit is always on
%S8	Always OFF	ALW_OFF	This bit is always off
%S9	Pause Scan	PAUSING_SCN	On for at least 1 scan prior to Pause 'n Load
%S10	Resume Scan	RESUMED_SCN	On for 1 scan only after Pause 'n Load is done
%S11	Forcing Present	FORCE	If on, I/O is presently being forced
%S12	Forcing Enabled	FORCE_EN	If on, I/O forcing is been enabled
%S13	Net I/O OK	NET_IO_OK	If on, Network I/O is OK

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%SR Registers

%SR registers are special word-length registers that display and/or control system operations in the controller. Not all controllers support all defined system registers. Click on the name of the register to see more information on that register.

SR #	Name and Description	Default I/O Name	Min - Max Values	Program (Read/Write)	Display (Read/Write)
%SR1	User Screen Number (0=none) *Excludes RCC Units	USER_SCR	0 to 1023	Read/Write	Read/Write
%SR2	Alarm Screen Number *Excludes RCC Units	ALRM_SCR	0 to 1-23	Read Only	Read Only
%SR3	System Screen Number 1 = Main System Menu 2= Set Network ID, Network Status, (%SR29) 3= Set Network Baud (%SR30) 4= Set Contrast (%SR32) 5= View OCS Status 6= View OCS Diagnostics 7= View I/O Slots 8= Set Function Key Mode (%SR33) 9= Set Serial Ports (%SR34) 10= Set Time/Date (%SR44-%SR50) 11= Set Beeper (%SR183) 12= Set Screen (%SR185) 13= Removable Media 14= View Protocols 15= IP Address IP Address - Internet Protocol - This is the address of a device on an Ethernet or Wi-Fi network. Horner controllers currently use IPv4 standards with addresses consisting of 4 numbers, or octets, separated by decimal points. (ETN I/O Board) 16= Fail Safe System 17= Backup / Restore Data 18= Enable AutoRun 19= Enable AutoLoad 20= Clone Unit - 21= Touch Calibration 24= License Details *Excludes RCC Units	SYS_SCR	0 to 24	Read/Write	Read/Write
%SR4	Self Test Results	SELF_TEST		Read Only	Read Only
%SR4.1	Self Test Results - BIOS Error			Read Only	Read Only
%SR4.2	Self Test Results - Engine Error			Read Only	Read Only
%SR4.3	Self Test Results - Ladder Error			Read Only	Read Only
%SR4.4	Self Test Results - RAM Error			Read Only	Read Only
%SR4.5	Self Test Results - Duplicate ID Error			Read Only	Read Only
%SR4.6	Self Test Results - Bad ID Error			Read Only	Read Only
%SR4.7	Self Test Results - I/O Configuration Error			Read Only	Read Only
%SR4.8	Self Test Results - Bad Network Error			Read Only	Read Only
%SR4.9	Self Test Results - Bad Logic Error			Read Only	Read Only
%SR4.10	Self Test Results - Bad Clock Error			Read Only	Read Only
%SR4.11	Self Test Results - DeviceNet Error			Read Only	Read Only
%SR4.12 - 16	Reserved
%SR5	Control Station Mode 0= Idle 1= Do I/O 2= Run 3= Online Change *Supported in XL, X5, and RCC units only	CS_Mode	0 to 3	Read Only	Read/Write
%SR6	Average Scan Rate ms ( / 10)			Read Only	Read Only
%SR7	Minimum Scan Rate ms ( / 10)			Read Only	Read Only
%SR8	Maximum Scan Rate ms ( / 10)			Read Only	Read Only
%SR9	Current Touch Pressure	TCH_PRESSURE	0 to 3000	Read Only	Read Only
%SR10	Threshold Touch Pressure	TCH_PRESSURE_TSH	0 to 3000	Read/Write	Read/Write
%SR11-12	Ladder Size (32-Bit DINT Double Integer - [Data Type DINT] - A 32-bit signed value. Double Integers are used where the value of the data is expected to be in the range of -2,147,483,648 to +2,147,483,647.)			Read Only	Read Only
%SR13-14	User Text Screen Size (32-Bit DINT) *Excludes RCC Units			Read Only	Read Only
%SR15-16	System Text Screen Size (32-Bit DINT) *Excludes RCC Units			Read Only	Read Only
%SR17-18	I/O Configuration Table Size (32-Bit DINT)			Read Only	Read Only
%SR19-20	Network Config Table Size (32-Bit DINT)			Read Only	Read Only
%SR21-22	Security Data Table Size (32-Bit DINT)			Read Only	Read Only
%SR23	Ladder Code CRC			Read Only	Read Only
%SR24	User Text CRC			Read Only	Read Only
%SR25	System Text CRC			Read Only	Read Only
%SR26	I/O Configuration Table CRC			Read Only	Read Only
%SR27	Network Configuration Table CRC			Read Only	Read Only
%SR28	Security Data Table CRC			Read Only	Read Only
%SR29	Network ID Usually refers to the ID of the device on a supported CAN, such as CsCAN, CANopen, etc. Each device must have a unique network ID. Also called Node ID.	NET_ID		Read Only	Read/Write
	CsCAN Horner APG's proprietary network protocol that runs on the Bosch CAN network specifications. Prior to the advent of the OCS. Mode		1 to 253
	DeviceNet Mode		0 to 63
	CANopen Mode		1 to 127
%SR30	Network Baud Rate 0=125KB 1= 250kB 2= 5000KB 3= 1MB 4=50K		0 to 4	Read Only	Read/Write
%SR31	Network Required 0= Network not required 1= Network required; 2= Network optimized; 3= Network required and optimized		0 to 3	Read Only	Read Only
%SR32	LCD Display Contrast setting *Excludes RCC Units		0 to 255	Read Only	Read/Write
%SR33	Function Key Toggle Mode 0= Momentary 1= Toggle *Excludes RCC Units		0 to 1	Read/Write	Read/Write
%SR34	RS232 Serial Protocol Mode 0= Firmware Update (RISM) 1= CsCAN Horner APG's proprietary network protocol that runs on the Bosch CAN network specifications. Prior to the advent of the OCS. 2= Generic (Ladder- Controlled) 3= Modbus RTU RTU - Remote Terminal Unit - A microprocessor-based device that monitors and controls field devices, that then connects to plant control or SCADA (supervisory control and data acquisition) systems. 4= Modbus ASCII ASCII - American Standard Code for Information Interchange - ASCII-coded characters are single-byte values in the range of 0 (zero) to 127. Codes in the range 128 to 255 are not defined by the ASCII standard, but rather by the equipment manufacturer.			Read Only	Read Only
%SR35-36	Unique Serial Number / Hexadecimal A base-16 numbering system which uses the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F for numeral. l LAN1 MAC ID MAC ID - Media Access Control - Where IP addresses are associated with TCP/IP (networking software), MAC addresses are linked to the hardware of network adapters. A MAC address is a hardware identification number that uniquely identifies each device on a network.			Read Only	Read Only
%SR37	Model Number			Read Only	Read Only
%SR38	Engine Version ( /100)			Read Only	Read Only
%SR39	BIOS Rev Number ( / 100)			Read Only	Read Only
%SR40	FPGA Image Rev Number ( / 10)			Read Only	Read Only
%SR41	Vertical Pixel Count *Excludes RCC Units			Read Only	Read Only
%SR42	Horizontal Pixel Count *Excludes RCC Units			Read Only	Read Only
%SR43	Keypad Type *Excludes RCC Units			Read Only	Read Only
%SR44	Real-Time-Clock Second	RTC_SEC	0 to 59	Read Only	Read Only
%SR45	Real-Time-Clock Minute	RTC_MIN	0 to 59	Read Only	Read Only
%SR46	Real-Time-Clock Hour	RTC_HOUR	0 to 23	Read Only	Read Only
%SR47	Real-Time-Clock Date	RTC_DATE	1 to 31	Read Only	Read Only
%SR48	Real-Time-Clock Month	RTC_MONTH	1 to 12	Read Only	Read Only
%SR49	Real-Time-Clock Year	RTC_YEAR	1996 to 2095	Read Only	Read Only
%SR50	Real-Time-Clock Day (1=Sunday)	RTC_DAY	1 to 7	Read Only	Read Only
%SR51	Network Error Count			Read Only	Read Only
%SR52	Watchdog-Tripped Error Count			Read Only	Read Only
%SR53-54	Reserved
%SR55.13	Self-Test: Battery Low or Missing			Read Only	Read Only
%SR56	Key Currently Pressed No key = 0 (No key pressed since power-up) F1 = 1 F2= 2 F3= 3 F4 = 4 F5= 5 F6= 6 F7=7 F8= 8 F9= 9 F10 = 10 F11= 11 F12 = 12 Enter = 13 +/ - = 14 . (dot) = 15 0 = 16 1 = 17 2 = 18 3 = 19 4 = 20 5 = 21 6 = 22 7= 23 8 = 24 9 = 25 System = 26 Escape = 27 Left = 28 Right = 29 Up = 30 Down = 31 Shift = 32 Soft Key 1 = 34 Soft Key 2 = 35 Soft Key 3 = 36 Soft Key 4 = 37 Soft Key 5 = 38 Soft Key 6 = 39 Soft Key 7 = 40 Soft Key 8 = 41 Release = 255 (Keys pressed since power- up but not currently) *Excludes RCC Units	LAST_KEY	0 to 255	Read Only	Read Only
%SR57	LCD Backlight Dimmer Register 0-100 = 0% to 100% On 100-255 = 100% On *Excludes RCC Units		0 to 255	Read Only	Read Only
%SR57.16	Temporarily disable Screen Saver *Excludes RCC Units			Read/Write	Read/Write
%SR58	User LEDs	USER_LEDS		Read/Write	Read/Write
%SR59	Engine Build Number (Only last three numbers displayed)			Read Only	Read Only
%SR60	Build Option Build Test = 0 Build Beta = 1 Build Product = 2		0 to 2	Read Only	Read Only
%SR61	Number of CsCAN Horner APG's proprietary network protocol that runs on the Bosch CAN network specifications. Prior to the advent of the OCS. Network IDs	NUM_IDS		Read Only	Read Only
%SR62-100	Reserved
%SR101.3	WebMI License Details – WebMI server status *XLEe, XLTe, X2, X4, X7 & X10			Read Only	Read Only
%SR101.4	WebMI License Details – WebMI user logged in status *XLEe, XLTe, X2, X4, X7 & X10			Read Only	Read Only
%SR101.8 - 101.16	WebMI License Details – Number of users *XLEe, XLTe, X2, X4, X7 & X10			Read Only	Read Only
%SR102 - 103	Reserved
%SR104-5	For security enabled PGM/Clone files enter password of current program running in the controller			Read/Write	Read/Write
%SR106-7	For security enabled PGM/Clone files enter password of program file that to be loaded in the controller.			Read/Write	Read/Write
%SR108	WebMI License Details – Number of webpages *XLEe, XLTe, X2, X4, X7 & X10			Read Only	Read Only
%SR109	WebMI License Details – Number of datapoints *XLEe, XLTe, X2, X4, X7 & X10			Read Only	Read Only
%SR110-112	WebMI License Details – Expiry date of WebMI license *XLEe, XLTe, X2, X4, X7 & X10 only			Read Only	Read Only
%SR113-130	Reserved
%SR131-135	OCS Model: ASCII, 10 characters			Read Only	Read Only
%SR136	Communication Download Timeout			Read Only	Read Only
%SR137	Communication Idle Timeout			Read Only	Read Only
%SR138-148	Reserved
%SR149-150	Free-running 10kHz count: 1 count = 0.1ms (32-Bit DINT)			Read Only	Read Only
%SR151	Reserved
%SR152	RS-485 An EIA standard that specifies electrical characteristics of drivers and receivers for use in serial communications. Electrical signaling is balanced and multipoint systems are supported. Termination			Read/Write	Read/Write
%SR152.1	MJ2 Termination Enable *Excludes RCC972			Read/Write	Read/Write
%SR152.2	MJ3 Termination Enable XL+ Only RS485 Termination Enable X4, X7 & X10 Only			Read/Write	Read/Write
%SR152.3	MJ1 Termination Enable *XL15+, XLE, XLT, RCC2414 Only			Read/Write	Read/Write
%SR152.4	MJ1 Biasing - XL15+ Only CAN Termination Enable - X4, X7 & X10 Only			Read/Write	Read/Write
%SR152.6	CANVAS Only Setting True saves the currently loaded program as PGM file in the Micro SD card as “DEFAULT.PGM”.			Read/Write	Read/Write
%SR152.7	CANVAS Only Setting True loads, the “DEFAULT.PGM” file located in Micro SD card.			Read/Write	Read/Write
%SR153 - 163	Reserved
%SR164	FailSafe / clone
%SR164.1	RS485 Port Biasing #1 (MJ1 or MJ2)			Read/Write	Read/Write
%SR164.2	RS485 Port Biasing #2 (MJ2 or MJ3)			Read/Write	Read/Write
%SR164.3	Indicates Automatic Restore Operation has been performed	AUTO_RESTRD		Read Only	Read Only
%SR164.4	Indicates Backup of Registers has been taken	BCKUP_TAKN		Read Only	Read Only
%SR164.5	Enable AUTORUN – Sets “Enable AutoRun” to “Yes” or “No”	EN_AUTO_LD		Read/Write	Read/Write
%SR164.6	Enable AUTOLOAD – Sets “Enable AutoLoad” to “Yes” or “Not”	EN_AUTO_LD		Read/Write	Read/Write
%SR164.7	Start Backup trigger bit – Setting TRUE starts backup of all register data	STRT_BCKUP		Read/Write	Read/Write
%SR164.8	Clear Backup trigger bit – Setting TRUE clears backup of all register data (if a backup was done previously)	CLR_BACKUP		Read/Write	Read/Write
%SR164.9	MAKE_CLONE trigger bit = Setting TRUE does a Load Clone (if a media card is present)	MAKE_CLONE		Read/Write	Read/Write
%SR164.10	LOAD_CLONE trigger bit – Setting TRUE does a LOAD CLONE (if a media card is present that contains clone files)	LOAD_CLONE		Read/Write	Read/Write
%SR164.11	Make Clone Fail (This bit goes high when Make/Create Clone fails)	MK_CLN_FL		Read/Write	Read/Write
%SR164.12	Load Clone Fail (This big goes high when Load Clone fails)	LD_CLN_FL		Read/Write	Read/Write
%SR164.14	Set to 1 to restore data manually, and this in turn sets %SR164.15 to 1. Set to 0 to abort restore operation. *RCC Units Only			Read/Write	Read/Write
%SR164.15	Set to 1 for manual restore of data. Set to 0 to complete the restore operation. *RCC Units Only			Read/Write	Read/Write
%SR165-166	Reserved
%SR167	Screen Update Time, Default= 5 *X4, X7 & X10 Only – Default = 10		2 to 50	Read/Write	Read/Write
%SR168-170	Reserved
%SR171	X-Coordinate Touched			Read Only	Read Only
%SR172	Y-Coordinate Touched			Read Only	Read Only
%SR173	System-Function Disable		0 to 1	Read/Write	Read/Write
%SR174	Removable Media Protect			Read/Write	Read/Write
%SR174.1	Request Media Card be Removed			Read/Write	Read/Write
%SR174.2	Indicates safe to remove Media Card			Read/Write	Read/Write
%SR175	Removable Media - Status			Read Only	Read Only
%SR176-177	Removable Media Free Space (32-Bit DINT)			Read Only	Read Only
%SR178-179	Removable Media Total Space (32-Bit DINT)			Read Only	Read Only
%SR180	Reserved
%SR181	Bits 1-16 indicate Unacknowledged in Alarm Groups 1-16	ALM_UNACK		Read Only	Read Only
%SR182	Bits 1-16 indicate Active in Alarm Groups 1-16	ALM_ACT		Read Only	Read Only
%SR183	Beep on Keypress Enable 0= Disabled 1= Enabled	SYS_BEEP	0 to 1	Read/Write	Read/Write
%SR184	Internal Beeper 0=OFF 1=ON	USER_BEEP	0 to 1	Read/Write	Read/Write
%SR185	Screen Saver Enabled 0= Disabled 1= Enabled NOTE: See %SR57.16		0 to 1	Read Only	Read Only
%SR186	Screen Saver Time in minutes (delay)		5 to 1200	Read Only	Read Only
%SR187	Network Usage (Avg)	NET_USE	0 to 1000	Read Only	Read Only
%SR188	Network Usage (Min)		0 to 1000	Read Only	Read Only
%SR189	Maximum Net Usage of all units on the CAN network		0 to 1000	Read Only	Read Only
%SR190	Network TX Usage % ( / 10) (Avg)	NT_TX_AVG	0 to 1000	Read Only	Read Only
%SR191	Network TX Usage % ( / 10) (Min)		0 to 1000	Read Only	Read Only
%SR192	Network TX Usage % ( / 10) (Max)		0 to 1000	Read Only	Read Only
EXTENDED SYSTEM REGISTERS
%SR193	Online Change	ONLINE_CHG
%SR193.1	TRUE if 2 programs in target FLASH			Read Only	Read Only
%SR193.2	TRUE to switch programs, FALSE when complete			Read Only	Read Only
%SR193.3	TRUE if executing program is temporary test			Read Only	Read Only
%SR193.4	TRUE during last scan of switched-from program			Read Only	Read Only
%SR193.5	TRUE during first scan of switched-to program			Read Only	Read Only
%SR193.6	TRUE to revert to FLASH and delete all RAM; FALSE when complete			Read Only	Read Only
%SR193.9	TRUE if error in temporary program			Read Only	Read Only
%SR194	Battery Charge Temp Low *XL15+ Only – Frequency in MHz			Read Only	Read Only
%SR195	Battery Charge Temp High *XL15+ Only – in degree centigrade			Read Only	Read Only
%SR196	Charging State NOTE: Refer to MAN1142 for more details on Rechargeable Batteries 0=Waiting 1=Normal Charging 2=Hot Charge 3=Hot Charge 4= Battery Hot 5= Cold Charge 6=Battery Cold 7=No Battery 8= Not Charging (after 8 hours of charging) 9= CPU Hot, not charging 10 Battery voltage <2V, not charging 11= First 2 minutes Init Wait (Not Charging)		0 to 11	Read Only	Read Only
%SR197	Charging Current Max mA			Read Only	Read Only
%SR198	Battery Voltage is mV			Read Only	Read Only
%SR199	Reserved
%SR200	InitRD Version ( /100)			Read Only	Read Only
%SR201 - 205	Linux Kernel version: ASCII, 10 characters			Read Only	Read Only
%SR206-208	Reserved
%SR209.3	WebMI Server Status. Bit 3 is ON if server running.			Read Only	Read Only
%SR209.4	WebMI User Logged in Status. Bit 4 is ON if 1 or more users logged in.			Read Only	Read Only
%SR209.8 - 209.14	Number of Users. Shows in upper byte in decimal format.			Read Only	Read Only
%SR210	Time Zone: set in minutes + / - UTC The primary time standard by which the world regulates clocks and time.. (Ex: EST is -4 hours = -240 minutes)			Read/Write	Read/Write
%SR211	Daylight Saving: YES = 1 Daylight Saving: NO = 0 (If daylight saving is enabled, one hour will be added to the local time).			Read/Write	Read/Write
%SR212	UTC The primary time standard by which the world regulates clocks and time. - Seconds			Read Only	Read Only
%SR213	UTC - Minutes			Read Only	Read Only
%SR214	UTC - Hours			Read Only	Read Only
%SR215	UTC - Date			Read Only	Read Only
%SR216	UTC - Month			Read Only	Read Only
%SR217	UTC - Year			Read Only	Read Only
%SR218	Number of Webpages, license detail (XLE/XLT, X2, X4, X7 & X10 use %SR101 & %SR108-112 for WebMI License Details.)			Read Only	Read Only
%SR219	Number of Data Points, license detail. (XLE/XLT, X2, X4, X7 & X10 use %SR101 & %SR108-112 for WebMI License Details)			Read Only	Read Only
%SR220-222	Expiration Date of WebMI License, license detail. (XLE/XLT, X2, X4, X7 & X10 use %SR101 & %SR108-112 for WebMI License Details)			Read Only	Read Only

For I/O Register Maps for individual controllers, refer to the Horner website Document Search page.

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