46
RS232/RS485 (Digital Interface)
Following functions are available:
1. Select RS232/485 (option between RS232 and RS485)
2. Baudrate (selection of transmission speed)
3. Slave address (Selecting a bus address, only when using RS485)
4. Test dig. Interface (command TI is send via RS232)
5. Go back
ECS / Standby External control signal
Corresponds to Function F28 in the Funct.-no. menu.
This is a potential free input. A closed contact switches e.g. temperature control on,
and an open contact switches e.g. temperature control off.
Please also refer to the
Com.G@te
section of this manual.
Following functions are available:
1.
No action
2.
Switch to 2
nd
set-point
3.
2
nd
set-point selective
4.
Internal / Process
5.
Temperature control ON / OFF
6.
Release
* No action:
A switch of the contacts open / closed or closed / open has no effect.
* Switch to 2
nd
set-point
Switching the closed contact to open contact causes the unit to use the value of the
second set-point. A further switch from open to closed contact causes the unit to
continue temperature control at the second set-point.
* 2
nd
set-point selective
An open contact causes the unit to use its internal set-point. A closed contact causes
the unit to use the value of the second set-point.
* Internal / Process
A closed contact causes the unit to immediately switch e.g. between internal and
external control mode. An open contact causes the unit to switch back to its original
control mode.
* Temperature control ON / OFF
Switching from open to closed contact causes the unit to start temperature control.
Switching from closed to open contact causes the unit to stop temperature control.
* Release
Switching from closed to open contact while temperature control is operating causes
the unit to stop temperature control. Switching back from open to closed contact
does
not start
the unit.
