Introduction
To use Protocol Macro instructions with E5CN-U Communications Protocol use the system protocol Compoway/F Master that is supplied with CX-Protocol and download it to the PLC.
PLC ladder can then be written to send protocol commands e.g.:
|
| 1. Communications Enable/Disable |
| DM0000 = 0005 No. of SEND words |
| DM0001 = 0001 NODE Number |
| DM0002 = 3005 MRC-SRC |
| DM0003 = 0004 No. of BYTES being sent |
| DM0004 = 0001(Enable) 0000(Disable) |
| |
| 2. Run/Stop |
| DM0000 = 0005 No. of SEND words |
| DM0001 = 0001 NODE Number |
| DM0002 = 3005 MRC-SRC |
| DM0003 = 0004 No. of BYTES being sent |
| DM0004 = 0100(Run) 0101(stop) |
| |
| 3. Read Status |
| DM0000 = 0007 No. of SEND words |
| DM0001 = 0001 NODE Number |
| DM0002 = 0101 MRC-SRC |
| DM0003 = 0012 No. of BYTES being sent |
| DM0004 = C000 VARIABLE TYPE +1/2 ADDRESS |
| DM0005 = 0100 1/1 ADDRESS + 00 |
| DM0006 = 0001 No. of ELEMENTS |
| Response |
| DM0010 = 0004 No. of RECEIVED words |
| DM0011 = 0000 RESPONSE CODE |
| DM0012 = **** First 16 Bits |
| DM0013 = **** Second 16 Bits |
| |
| 4. Read Process Value |
| DM0000 = 0007 No. of SEND words |
| DM0001 = 0001 NODE Number |
| DM0002 = 0101 MRC-SRC |
| DM0003 = 0012 No. of BYTES being sent |
| DM0004 = C000 VARIABLE TYPE +1/2 ADDRESS |
| DM0005 = 0000 1/2 ADDRESS + 00 |
| DM0006 = 0001 No. of ELEMENTS |
| Response |
| DM0010 = 0004 No. of RECEIVED words |
| DM0011 = 0000 RESPONSE CODE |
| DM0012 = **** Lower 4 digits in HEX |
| DM0013 = **** Upper 4 digits in HEX |
| |
| 5. Change Set Value |
| DM0000 = 0009 No. of SEND words |
| DM0001 = 0001 NODE Number |
| DM0002 = 0102 MRC-SRC |
| DM0003 = 0020 No. of BYTES being sent |
| DM0004 = C100 VARIABLE TYPE +1/2 ADDRESS |
| DM0005 = 0300 1/2 ADDRESS + 00 |
| DM0006 = 0001 No. of ELEMENTS |
| DM0007 = 0000(HEX) Upper 4 digits of SV |
| DM0008 = 00FF(HEX) Lower 4 digits of SV (eg 255) |
| Response |
| DM0010 = 0004 No. of RECEIVED words |
| DM0011 = 0000 RESPONSE CODE |
| DM0012 = **** First 16 Bits |
| DM0013 = **** Second 16 Bits |
| |
| Bit Position |
Status |
Bit Description |
Bit Description |
| |
|
0 |
1 |
| 0 |
Heater overcurrent (CT1) |
Not generated |
Generated |
| 1 |
Heater current hold (CT1) See Note1) |
Update |
Hold |
| 2 |
HB (heater burnout) error |
Not generated |
Generated |
| 3 |
HS alarm output (CT1) |
OFF |
ON |
| 4 |
Spare |
OFF |
--- |
| 5 |
Display range exceeded |
Not generated |
Generated |
| 6 |
Input error |
Not generated |
Generated |
| 7 |
Spare |
OFF |
--- |
| 8 |
Control output (heating) |
OFF |
ON |
| 9 |
Control output (cooling) |
OFF |
ON |
| 10 |
HB (heater burnout) alarm output (CT1) |
OFF |
ON |
| 11 |
HB (heater burnout) alarm output (CT2) |
OFF |
ON |
| 12 |
Alarm output 1 |
OFF |
ON |
| 13 |
Alarm output 2 |
OFF |
ON |
| 14 |
Alarm output 3 |
OFF |
ON |
| 15 |
Program end output |
OFF |
ON |
| 16 |
Event input 1 |
OFF |
ON |
| 17 |
Event input 2 |
OFF |
ON |
| 18 |
Spare |
OFF |
--- |
| 19 |
Spare |
OFF |
--- |
| 20 |
Write mode |
Backup mode |
RAM write mode |
| 21 |
EEPROM |
RAM=EEPROM |
RAM=EEPROM |
| 22 |
Setup area |
Setup area 0 |
Setup area 1 |
| 23 |
AT execute/cancel |
AT cancelled |
AT execution in progress |
| 24 |
RUN/STOP |
Run |
Stop |
| 25 |
Communications writing |
OFF (disabled) |
ON enabled |
| 26 |
Auto/manual switch |
Automatic mode |
Manual mode |
| 27 |
Spare |
OFF |
--- |
| 28 |
Heater overcurrent (CT2) |
Not generated |
Generated |
| 29 |
Heater current hold (CT2)(See note 1) |
Update |
Hold |
| 30 |
Spare |
OFF |
--- |
| 31 |
HS alarm output (CT2) |
OFF |
ON |
Note 1 - When the control output ON time is less than 190 ms, the bit is set to '1' and the heater current is held at the last current value.
Note 2 - 'Spare' bits are always OFF.
Note 3 - When read in setup area 1, the status of the bits will always be as follows:
Overcurrent: Last value held
HB error: Last value held
Input error: Last value held
HB and HS outputs: Cleared
Program end output: Cleared
Current hold: Last value held
Display range exceeded: Last value held
Heating and cooling outputs: Cleared
Alarm outputs: Cleared
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