Eaton ELC-PB, Programming Manual

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3 . I n s t r u c t i o n S e t
M N050 03003E F or mo re infor ma tio n vi sit:
w w w. e a t o n . c o m
3-225
Receving data: (External equipment
→
ELC)
D120L D122L D123L D124L D125L D126L D121L
Registers for r starting from
lower 8 bits of D120
eceived data,
Length = 7
Points to note:
1.
ELC COM1 RS-232:
Special bits (M-bits) and special registers (D-registers) used for
communication instructions RS / MODRD
Flag Function Action
M1138
COM1 lock communication settings. Communication settings will be
set according to the contents in D1036 after every scan cycle,
unless after setting the interface parameters with D1036, M1038 is
Set. This will retain the communication protocol settings. When
M1138 = ON, the communication settings for COM1 will not be
changed when the content in D1036 is changed.
Supported communication instructions: RS / MODRW
User
sets and
resets
M1139
COM1 ASCII / RTU mode selection, ON: RTU, OFF: ASCII.
Supported communication instructions: RS / MODRW
User
sets and
resets
M1312
COM1 sending request. Before executing communication
instructions, users need to set M1312 to ON with a trigger pulse, to
initiate data transmission. When the communication is completed,
the ELC will reset M1312 automatically.
Supported communication instructions: RS / MODRW
User
sets and
system
resets
M1313
COM1 ready to receive data. When M1313 is ON, the ELC is ready
to receive data
Supported communication instructions: RS / MODRW
System
M1314
M1314 will be ON when the data received is complete. Process the
data received when M1314 is on. When the data has been
processed, M1314 must be reset by the program.
Supported communication instructions: RS / MODRW
System
sets
and user
resets
M1315
COM1 receiving error. M1315 will be set ON when errors occur and
the error code will be stored in D1250.
Supported communication instructions: RS / MODRW
System
sets and
user
resets