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Serial communication (C5 option)
The following operations are performed from an external computer.
(1) Reading and writing of the SV, PID and other various set values
(2) Reading of the PV and action status
(3) Function change
Cable length : Max. 1.2 km, Cable resistance: Within 50
(Terminators are not necessary, but
if used, use 120
or more on one side.)
Communication line:
EIA RS-485
Communication method: Half-duplex communication
Communication speed: 2400/4800/9600/19200/38400 bps (Default: 9600bps)(Selectable by keypad)
Synchronization method: Start-stop synchronization
Data bit/Parity:
7, 8/Even, Odd, No parity (Selectable by keypad)
Stop bit:
1, 2 (Selectable by keypad)
Communication protocol: Shinko protocol/Modbus ASCII/Modbus RTU (Selectable by keypad)
(Default: Shinko protocol)
Data format:
Error correction: Command request repeat system
Error detection: Parity check, checksum (Shinko protocol), LRC (Modbus ASCII), CRC-16 (Modbus RTU)
Digital external setting:
SV of the programmable controller (with the SVTC option) can be digitally transmitted to the
DCL-33A (with the C5 option) by combining the programmable controller with the DCL-33A. When
data from the programmable controller is larger than SV high limit or smaller than SV low limit,
DCL-33A ignores the value and controls with the previous value. The control desired value adds SVTC
bias value to the value received by the SVTC command.
Heating/Cooling control output (DC option)
OUT2 proportional band: 0.0 to 10.0 times OUT1 proportional band (ON/OFF control when set to 0.0)
Integral time: Same as that of OUT1
Derivative time: Same as that of OUT1
OUT2 proportional cycle: 1 to 120 seconds
Overlap/dead band: Thermocouple, RTD input: –100.0 to 100.0
( )
DC voltage, current input: –1000 to 1000 (The placement of the decimal point
follows the selection)
OUT2 ON/OFF hysteresis: Thermocouple, RTD input: 0.1 to 100.0
( )
DC voltage, current input: 1 to 1000 (The placement of the decimal point
follows the selection.)
OUT2 high limit, OUT2 low limit: 0 to 100%
OUT2 cooling mode: Air cooling (Linear characteristics), Oil cooling (1.5th power of the linear
characteristics), Water cooling (2nd power of the linear characteristics)
Output: Open collector, control capacity: 0.1 A 24 V DC
Communication protocol
Shinko protocol
Modbus ASCII
Modbus RTU
Start bit
1
1
1
Data bit
7
7
8
Parity
Even
Even (Odd, No parity)
No parity (Even, Odd)
Stop bit
1
1 or 2
1 or 2
Summary of Contents for DCL-33A
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