The mode of the input ports can be set with this ISDU register.
Accessing the ISDU register through the subindex 0, the settings for all ports can be read/written.
Accessing the ISDU register through subindex 1-8, the port mode for the corresponding port
(P0-P7) can be read/written.
00
hex
= Voltage input, 0V - 10V
01
hex
= Current input, 4mA – 20 mA
02
hex
= Voltage input, 5V – 10V
03
hex
= Voltage input, -10V – 10V
04
hex
= Voltage input, 0V – 5V
05
hex
= Current input, 0mA – 20 mA
06
hex
= Voltage input, -5V - +5V
07
hex
= Pt100
08
hex
= Pt1000
09
hex
= Type J thermocouple
0A
hex
= Type K thermocouple
FF
hex
= Port is switched off
Attention!
Changing the analog mode of the port to voltage or current input, +24V will be switched
between pin1 and pin 3, in order to supply the analog sensor. Be sure, that no Pt100 or
Pt1000 sensor is connected to the analog port. The +24V supply voltage can damage
the RTD sensor.