COMMUNICATION INSTRUCTION MANUAL
To prevent accidents arising from the misuse of this controller, please ensure the operator receives this manual.
For this product to which communication function has been added, "1" is entered after the heater burnout
alarm indication in the model number.
(For the model number and basic operation, refer to the instruction manual for KT7.)
Warning
Turn the power supply to the instrument off before wiring or checking it.
Working or touching the terminal with the power switched on may result in severe injury or
death due to Electric Shock.
1. Setup of the KT7
Set the items "Communication protocol selection", "Instrument number setting", "Communication speed
selection" "Parity selection" and "Stop bit selection" after the "Sensor correction setting" in the Auxiliary
function setting mode 1.
To enter Auxiliary function setting mode 1, press the
key.
Character
(PV display)
Communication protocol selection
• Selects the Communication protocol.
• Modbus ASCII mode:
Modbus RTU mode:
Instrument number setting
• Sets individual instrument number for each unit when communicating by
connecting plural controllers in serial communication.
Up to 31 units can be connected, however, the instrument number can be set
within the range 0 to 95.
• 0 to 95
Communication speed selection
• Selects a communication speed to correspond to that of host computer.
• 2400bps:
Parity selection
• Selects the parity.
• No parity:
Stop bit selection
• Selects the stop bit.
• 1 or 2
2. Terminal arrangement
Modular plug applicable to the modular jack of KT7 with communication function is RJ-11 (6-pin type).
Recommended model: TM20P-66P
For the communication cable, two twisted 2-core cables or one twisted 3-core cable is recommended.
When using one twisted 3-core cable, use either pin 1 or pin 6 for SG of the plug.
Name, Functions and Setting range
, 4800bps:
, Even parity:
(Fig. 2-1)
(Hirose Electric CO.,LTD.)
TEMPERATURE CONTROLLER
key for 3 seconds while holding down the
: Not available.
, 9600bps:
, 19200bps:
, Odd parity:
OUT
RELAY : Relay contact output
№1
SG
№2
NC
V/A
№3
YB(+)
№4
YA(-)
EVT
№5
NC
№6
SG
TC
RTD
DC
RS-485: Serial communication
(Applicable cable diameter: ø0.4 to 0.65mm)
1
KT7
No. KTC2E8 2013.05
Default
(SV display)
Modbus ASCII
0
9600bps
Even
1
: Control output
: DC voltage output /DC current
output
: Event output
[Outputs when Alarm, Loop
break alarm or Heater burnout
alarm (option) is on]
: Thermocouple
: Resistance Temperature Detector
: DC current or DC voltage