External Interfaces - Conair Thermolator TW-S User Manual

External In te r face s
Setting the So f t wa r e
If you ordered the "remote setpoint" option with the TCU, your TCU will come pre-configured to
accept a remote setpoint. This means that you will NOT be able to select a setpoint directly from
the temperature controller (without changing the default parameters). Additionally, the TCU comes
from the factory set to 0-20mA covering the entire range of 10°F to 260°F.
Remote Setpoint Related Parameters
U34 Remote setpoint enabled
U35 Remote setpoint type
U36 Remote setpoint high range
U37 Remote setpoint low range
Process Value Retransmit Analog Output:
If you ordered the "process value retransmit" communication option with the TCU, your TCU will
come pre-configured to accept a remote setpoint. This means that you will NOT be able to select a
setpoint directly from the temperature controller (without changing the default parameters). Addi-
tionally, the TCU comes from the factory set to 0-20mA covering the entire range of 10°F to 260°F.
Process Value Related Parameters
U38 Communications type
U39 Retransmit type
U40 Retransmit high limit
U41 Retransmit low limit
Modb us RT U C o mm un i ca t i on
Connecting to the Thermolator
The Thermolator has a 2-wire (plus common) RS-485 network for Modbus communication.
Pin 4 T+/R+
Pin 5 T-/R-
DB-9 hood Common
Setting the Modbus Address and Speed
Modbus Related Parameters
U38 Communications type
U42 Communications Baud Rate
U43 Modbus ID
(Continued)
rse ena
Disabled (lS) or Enabled (En)
rst nna 4-20mA (nn) or 0-10 Volts (u) (be sure to also
change jumpers)
rsH 2 rSl to 
rS  - to rSH
t rEt
OFF,
Retransmit (rEt),
ModBus-RTU (bUS),
ModBus-TCP (tcP), or
Handheld Remote (Hn)

NOTE: No SPI communications
rtt nn 4-20mA (nn) or 0-10 Volts (u)
rtH 2 rSl to 
rt 
- to rEH
t bUS OFF,
Retransmit (rEt),
ModBus-RTU/TCP (bUS), or
Handheld Remote (Hn)
bU 
2 to 
b 
 to 24
A ppendi x I E-3