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E L C P r o g r a m m i n g M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003003E
3-230
3.
ELC COM3 RS-485:
Special M-bits and D-registers for communication instructions RS /
MODRW.
Flag
Function
Action
M1136
COM3 retain communication settings. Communication settings will
be reset (changed) according to the content in D1109 after every
scan cycle. Users can set ON M1136 if the communication protocol
requires to be retained. When M1136 = ON, communication settings
will not be reset (changed) when communication instructions are
being processed, even if the content in D1109 is changed.
Supported communication instructions: RS / MODRW
M1320
COM3 ASCII / RTU mode selection. ON: RTU, OFF: ASCII.
Supported communication instructions: RS / MODRW
User
sets and
resets
M1316
COM3 sending request. Before executing communication
instructions, set M1316 to ON by with a pulse, to initiate sending and
receiving data. When communications is completed, ELC will reset
M1316 automatically.
Supported communication instructions: RS / MODRW
User
sets,
system
resets
M1317
Data receive ready. When M1317 is ON, ELC is ready to receive
data.
Supported communication instructions: RS / MODRW
System
sets
M1318
COM3 data receive complete.
Supported communication instructions: RS / MODRW
System
sets,
user
resets
M1319
COM3 data receive error. M1319 will be set ON when errors occur
and the error code will be stored in D1252
Supported communication instructions: RS / MODRW
System
sets,
user
resets
Содержание ELC-PB
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