Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules - Manual (Page 220)

220 Rockwell Automation Publication 1756-UM058G-EN-P - November 2012
Appendix C Use Ladder Logic To Perform Run Time Services and Reconfiguration
CST_Information SINT[20] Current CST Time from Module CST_Information[0] Current_Time DINT[2] 8
Status of CST in Module
Bit0: 0 = timer OK, 1 = timer fault
Bit1: 0 = no ramping, 1 = ramping (ramping indicates that once
time is synchronized, it will correct errors by slowly ramping to
the master’s time)
Bit2: 0 = not time master, 1 = time master (that is, controller)
Bit3: 0 = time not synced, 1 = time synced with master CST_Information[8] CST_Status INT 2
Size of timer in bits CST_Information[10] CST_Timer_Size INT 2
Unused CST_Information[12] CST_reserved 8
WHO_Information SINT[47] Device manufacturer’s vendor ID (1 = AB) WHO_Information[0] WHO_vendor
INT 2
Device’s product type (7 = Digital I/O) WHO_Information[2] WHO_product_type
INT 2
Device’s catalog code which maps to its catalog number WHO_Information[4] WHO_catalog_code
INT 2
Device’s major revision WHO_Information[6] WHO_major_revision
SINT 1
Device’s minor revision WHO_Information[7] WHO_minor_revision
SINT 1
Device’s internal status
Bit 0: 0 = unowned, 1 = owned
Bit 2: 0 = unconfigured, 1 = configured
Bits 7…4: forms a 4-bit number indicating Device Specific Status
For Digital I/O:
0 = Self-Test
1 = Flash update in progress
2 = Communication fault
3 = Not owned
4 = Unused
5 = Internal fault (module needs to be flash updated)
6 = Run mode
7 = Program mode (N/A for input modules)
Bit 8: 0 = no fault, 1 = Minor recoverable fault (that is, backplane
error detected)
Bit 9: 0 = no fault, 1 = Minor non-recoverable fault
Bit 10: 0 = no fault, 1 = Major recoverable fault
Bit 11: 0 = no fault, 1 = Major non-recoverable fault (that is,
module needs to be reflashed)
Bits 15…12: unused
WHO_Information[8] WHO_status
INT 2
Device’s serial number WHO_Information[10] WHO_serial_number
DINT 4
Number of characters in the text string WHO_Information[14] WHO_string_length
SINT 1
Device’s ASCII text string describing the module WHO_Information[15] WHO_ascii_string 32
Table 58 - Copy Instruction Parameters for Module Services—Required for RSLogix 5000 Software, Version 9.00.00 or Earlier (continued)
Source/Destination Tag
in MSG Instruction Description Copy Instruction (COP) - This instruction moves data to/from
generic source/destination buffers
Source Destination Length
(bytes)