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Chapter 5
Configuration and Interfacing
CMD
Code
01h
06h
08h
0Fh
5-2
Table 5.A
PCCC Commands Supported by the Communications Module
FNC
Command Name
Code
n/a
Unprotected Read
00h
Echo
01h
Read Diagnostic Counters
02h
Set Variables (#ENQs, #NAKs, TIMEOUT)
03h
Identify Host and Some Status
04h
Set Timeout
05h
Set #NAKs
06h
Set #ENQs
07h
Reset Diagnostic Counters
09h
Read Link Parameters
0Ah
Set Link Parameters
n/a
Unprotected Write
67h
Typed Write
68h
Typed Read
A2h
Protected Typed Logical Read
AAh
Protected Typed Logical Write
PLC Addressing Method
PLC-2 Address
n/a
Variable (modified PLC-2 addresses)
n/a
n/a
n/a
n/a
n/a
n/a
Logical Address
Logical Address
PLC-2 Address
System Address (4 possibilities)
System Address (4 possibilities)
File#/Type/Element#/Sub-element#
File#/Type/Element#/Sub-element#
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