Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 97)

Message Packet Formats
Chapter 5
5-18
Protected Write
This command writes words of data into limited areas of the PC data table
memory. Its access is limited by memory access rungs in the
communication zone of the PC’s ladder diagram program.
Command Format:
Reply Format:
TNS STS CMD
00
SRC DST
TNS STS CMD
40
SRC DST
ADDR DATA — Max. of 243 Bytes
Set ENQS
This command sets the maximum number of ENQs that the station
interface module will issue per message transmission. Put the number in
the DATA field. The default setting for the KF2 module is 10 ENQs per
transmission.
Command Format:
Reply Format:
TNS STS CMD
06
SRC DST
TNS STS CMD
46
SRC DST
FNC
06
DATA