Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 91)

Message Packet Formats
Chapter 5
5-12
Table 5.B
Contents of Status DATA for 1771-KA2, -KC/KD, -KE/KF; 1770-KF2; 1771-KG, 1774-KA; and
1785-KA Modules
Byte Bit Value Meaning
1 Operating Status of PC Processor — For the 1770-KF2, this byte is always 0. For the 1785-KA, it has one of these values:
0 = Standby Mode 1 = On-Line Mode
0-2 0
1
2
3
4
5 Program Load Mode
Test Mode
Run Mode
(Not Used)
Remote Program Load
Remote Test
3 0
1 Normal
No Communication with PC
4 0
1 Normal
Download Mode
5 0
1 Normal
Format Error in Communication Zone of PC Program
6, 7 Always Zero
2
Type of Station Interface Module and Processor
NOTE: The 1770-KF2 identifies itself as a station interface module with a “3” in Byte 2, Bits 0 to 3 (i.e., as a 1771-KE/KF).
0-3 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 1771-KC/KD Module
1771-KA Module
1774-KA Module
1771-KE/KF or 1770-KF2 Module
1771-KG Module
1771-KGM Module
1775-KA, Data Highway Port
1775-KA, RS-232-C Port
1773-KA, Data Highway Port
1773-KA, RS-232-C Port
(Unused)
PLC-5 Processor Interface
(Unused)
(Unused)
Check Interface Module Expansion Byte (Byte 3)
Computer
4-7 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 PLC Processor
PLC-2 Processor
PLC-2/20 (LP1) Processor
Mini-PLC-2 Processor
PLC-3 Processor
PLC-2/20 (LP2) Processor
PLC-2/15 Processor
PLC-2/30 Processor
PLC-4 Microtrol Processor
(Not Used)
(Not Used)
PLC-5 Processor Interface
(Not Used)
(Not Used)
Check Processor Expansion Byte (Byte 4)
Computer
3-4 Octal Word Address of the Start of PC Program — For the KF2 module, these are always 0. For the 1785-KA module, these are the
expansions of the interface module type bits and the processor type bits, respectively. Both have a value of 16.
5-6 Memory Size (Number of Bytes) for PLC Processors; Zero Otherwise — For the 1785-KA module, this is the starting address of the counters on
the link other than the one from which the diagnostic read command was issued.
7-8 Starting Byte Address of Diagnostic Counters and Timers — For the 1785-KA module, this is the starting address of the counters on the link
from which the diagnostic read command was issued.
9
Series and Revision Level of Station Interface Module
NOTE: The Series A 1770-KF2 identifies itself as Series “D” in Byte 9, Bits 5 to 7.; Series B KF2 identifies itself as Series E; and so on.
0-4
5-7
0
1
0
1 Revision A
Revision B, etc.
Series A
Series B, etc.
10 Settings of the Option Switches on the Station Interface Module — This byte is not used in replies by 1771-KC/KD or -KE/KF modules. For the
other modules, the bits of this byte are defined as follows:
1771-KA2 MODULE
0-1 0
1
2
3 57,600 Bits per Second
Undefined
Undefined
Undefined
2 0
1 All Other PLC-2 Family Processors
PLC-2 Processor
3 0
1 Protected Commands Enabled
Protected Commands Disabled
4 0
1 Unprotected Commands Enabled
Unprotected Commands Disabled
5 -- Not Used
6 0
1 Physical Writes Enabled
Physical Writes Disabled
7 0
1 Transmission Unprotected Commands Enabled
Transmission Unprotected Commands Disabled