Allen-Bradley Bulletin 1203 Series User Manual page 36

4–2 Configuring and Interfacing
CMD Code
01h
06h
08h
0Fh
1203–5.5 September 1995
Supported PCCC Command List
The Serial Communications Module supports the following PCCC
Commands:
FNC Code Command Name
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
Protected typed logical read with two
A1h
address fields
Protected typed logical read with three
A2h
address fields
Protected typed logical write with two
A9h
address fields
Protected typed logical write with three
AAh
address fields
Protected typed logical write with four
ABh
address fields
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 number/type/element number
File number/type/element
number/sub–element number
File number/type/element number
File number/type/element number/
sub–element number
File number/type/element number/
sub–element number/bit mask