Interfaces and software update
Chapter 6
OPERATION MANUAL
V1.2.0en/12.05.15//14.06
Liability for errors and misprints excluded.
Unistat® T300 Series
75
The following variants are offered:
▪
“No Action”:
Switching the contacts open/closed or closed/open has no effect.
▪
“Switching to second setpoint”:
A change from a closed to an open contact replaces the set
setpoint with the second setpoint. This altered setpoint is not fixed to the second setpoint but can
be changed by the operator at the temperature control unit at any time. A change from an open
to a closed contact does not cause any change and the temperature control process is not reset to
the original setpoint.
▪
“Second setpoint selective”:
An open contact causes a thermoregulation to its original setpoint.
An closed contact causes a thermoregulation to the second setpoint.
▪
“Internal / Process”:
If the contact is open, the device-internal temperature sensor is used for
control. If the contact is closed, the additionally connected external temperature sensor is used
for control. Switching the contacts open/closed or closed/open switches between these two tem-
perature sensors.
▪
“Temperature control on/off”:
The temperature control process starts when switching from an
open to a closed contact. The temperature control process switches off when switching from a
closed to an open contact.
▪
“Release”:
The temperature control process switches off, if the temperature control process is
active and the contact is switched from closed to open. The temperature control process is
not
switched on
, if contact is further switched from open to closed!
The interface is specified as a digital input. Do not apply voltage or current.
Pin
Signal
1.3 E2
2
E1
6.3.5
Jack RS232/RS485 serial
A PC, a SPS or a Process Control System (PCS) can be connected to this jack for remote control of the
controller electronics. Alternatively, a connection to a RS485 bus is possible. Before plugging in the
cable, check the settings in the “Interfaces” category and adjust if necessary.
The interfaces used must meet the specifications of the generally accepted standards.
Pin
Signal
Description
Wiring RS232
2
RxD
Receive Data
3
TxD
Transmit Data
5
GND
Signal GND
Wiring RS485
6
A with 120-
Ω terminating resistor
7
A
8
B
6.4
Firmware update
An instruction for running a firmware update can be found at www.huber-online.com.
Pin assignment
Pin assignment
