IKA C-MAG HS 7 control Manual De Instrucciones página 24

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NAMUR Commands
OUT_SP_12@n
OUT_SP_42@n
OUT_WD1@m
OUT_WD2@m
"Watchdog" functions, monitoring of the serial data flow
If, once this function has been activated (see NAMUR commands), there is
no retransmission of the command from the computer within the set time
("watchdog time"), the heating and stirring functions are switched off in
accordance with the set "watchdog" function or are changed to the set
target values.
The data transmission may be interrupted by, for example, a crash in the
operating system, a power failure in the PC or an issue with the connection
table between the computer and the device.
"Watchdog" – mode 1
If there is an interruption in data communications (longer than the set
watchdog time), the heating and stirring functions are switched off and
ER 2 is displayed.
"Watchdog" – mode 2
If there is an interruption in data communications (longer than the set
watchdog time), the speed target value is changed to the WD safety
speed limit and the temperature target value is changed to the WD safety
temperature limit value. The warning WD is displayed.
46
Interfaces and outputs
Function
Setting WD safety limit temperature with set value echo
Setting WD safety limit speed with set value echo
Watchdog mode 1: If event WD1 should occur, the
heating and stirring functions are switched off and ER 2 is
displayed. Set watchdog time to m (20 – 1,500) seconds,
with watchdog time echo. This command launches the
watchdog function and must be transmitted within the set
watchdog time.
Watchdog mode 2: if event WD2 should occur, the speed
target value is changed to the WD safety speed limit and
the temperature target value is changed to the WD safety
temperature limit value. The warning WD is displayed.
The WD2 event can be reset with OUT_WD2@0 – this
also stops the watchdog function. Set watchdog time to
m (20 – 1,500) seconds, with watchdog time echo. This
command launches the watchdog function and must be
transmitted within the set watchdog time.
PC 1.1 cable
This cable is used to connect the 9-pin plug to a computer.
1
6
2
7
3
8
4
9
5
1
RxD 2
TxD 3
4
GND 5
6
RTS 7
CTS 8
9
USB cable A – B
This cable is used to connect the USB interface to a PC.
USB B
5
9
4
8
3
7
2
6
1
1
2 RxD
3 TxD
4
PC
5 GND
6
7 RTS
8 CTS
9
USB A
Interfaces and outputs
47

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