Appendix
I
E-3
External Interfaces
Setting the Software
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
rse
ena
Disabled (
lS
) or Enabled (
En
)
U35
Remote setpoint type
rst
nna
4-20mA (
nn
) or 0-10 Volts (
u
) (be sure to also
change jumpers)
U36
Remote setpoint high range
rsH
2
rSl
to
U37
Remote setpoint low range
rS
-
to
rSH
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
t
rEt
OFF
,
Retransmit (
rEt
),
ModBus-RTU (
bUS
),
ModBus-TCP (
tcP
), or
Handheld Remote (
Hn
)
NOTE: No SPI communications
U39
Retransmit type
rtt
nn
4-20mA (
nn
) or 0-10 Volts (
u
)
U40
Retransmit high limit
rtH
2
rSl
to
U41
Retransmit low limit
rt
-
to
rEH
Modbus RTU Communication
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
t
bUS
OFF
,
Retransmit (
rEt
),
ModBus-RTU/TCP (
bUS
), or
Handheld Remote (
Hn
)
U42
Communications Baud Rate
bU
2
to
U43
Modbus ID
b
to
24
(Continued)
Summary of Contents for Thermolator TW-P
Page 6: ...iv I Table of Contents ...
Page 12: ...1 6 I Introduction ...
Page 36: ...3 14 I ...
Page 58: ...4 22 I Operation ...
Page 72: ...5 14 I Maintenance ...
Page 128: ...E 4 I Appendix ...
Page 134: ...G 4 I Appendix ...
Page 136: ...H 2 I Appendix ...