
DSM314 COMM REQ
GFK-1742A Appendix B DSM314 Communications Request Instructions B-13
B
User Data Table COMM REQ Example
OMM_
EQ
N
YSID
ASK
T
ENABLE
%R196
0007
00000
PU
SM
Power
Supply
Slot No:
8 9 10
eries 90-30 PLC, Rack 0
0007 = Rack 0, Slot 7)
Command Block for DSM COMM_REQ
emory
ddress
Value
escription
R196 4
ngth, in words, of Data Block H
ader (always 4)
R197 0
AIT/NOWAIT Flag. Always 0 for DSM
R198 8
= Register memory (%R) for Status Word
ddress
R199 194
pecifies register 195 for Status Word address
R200 0
lways 0 for DSM
R201 0
lways 0 for DSM
(Start of “Data
lock
eader” section
R202 D001h
rite to DSM314’s User Data Table Segment 1
R203
2048
DT Segment Size, always 2048 bytes
R204 8
= Register memory (%R) for PLC Memory
R205 300
pecifies register 301
for start of PLC data
%R195: Status
Word Register
Always 0 for DSM)
ault output
(Command Block pointer)
Data Block
Header
(4 words)
MSWD-TWM
AULT
M0295
END
T0001
%T0001
Figure B-5. DSM314 UDT COMM REQ Example
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