Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 94)

Message Packet Formats
Chapter 5
5-15
Table 5.D
Contents of Status DATA for 1775-KA Modules
Byte Bit Value Meaning
1 Operating Status of PLC-3 Processor
0-1 0
1
2 Program Mode
Test Mode
Run Mode
2 -- Not Used
3 0
1 Normal
Major Processor Fault
4 0
1 Normal
Shutdown Request
5 0
1 Normal
Shutdown in Effect
6-7 -- Not Used
2 Type of Station Interface
0-3 6
7 1775-KA, Data Highway Port
1775-KA, RS-232-C Port
3 Current Context (Stored in Bits 4 to 7)
4 Thumbwheel Number
5-6 Mode Control Word — The logical address of the mode control word is E0.0.0.8.
7-8 Starting Byte Address of the Diagnostic Counters and Timers — There is a separate
block of diagnostic timers and counters for the Data Highway port and the RS-232-C
port. The address given here is the one for the port that received the diagnostic status
command.
9 Series and Revision Number of the 1775-KA Module
0-4 0
1 Revision A
Revision B, Etc.
5-7 0
1 Series A
Series B, Etc.
10 Not Used
11-14 The Physical Address of the Unused Word of PLC-3 System Memory — This is the
physical address corresponding to the logical address E60.0.0.0.
15-18 The Total Number of Words in the PLC-3 System Memory (Both Used and Unused) —
This is the physical word address that corresponds to the logical address E60.0.0.0.