I/O System S900
Communication Interface for PROFIBUS DP, CI920
12
3BDD010422R0101
every 20 ms. These times are independent of the cycle time specified for the
external fieldbus.
Output data
The transmission of output data is triggered by events. When an output data
telegram is received via the fieldbus, all data are transmitted synchronously to
the respective I/O modules.
I/O module monitoring
The connected I/O modules are monitored cyclically. When a module is not
found, a diagnostic messages is generated. For the input modules, the defined
default value is transmitted instead of the measured value. The default valid is
marked as invalid.
Supported I/O Modules
Table 2-1 Supported I/O - modules
CI920 Version (Softw.)
Type Description
Prm.-M. 1
Prm.-M. 2
Digital Input / Output
DO910
Digital output, 4 x 1 channels (Solenoid driver)
> 1.0.x
> 1.2.x
DX910
Digital input / output, 1 x 8 channels
> 1.0.x
> 1.2.x
Analog Input / Output
AI910
Analog input, 1 x 4 channels, active
> 1.2.x
> 1.2.x
AI930
Analog input, 1 x 4 channels, active, HART
> 1.0.x
> 1.2.x
AI931
Analog input, 1 x 4 channels, active, HART
> 1.2.x
> 1.2.x
AO910
Analog output, 1 x 4 channels
> 1.4.x
> 1.4.x
AO920
Analog output, 4 x 1 channels (isolated)
> 1.0.x
> 1.2.x
AO930
Analog output, 1 x 4 channels, HART
> 1.2.x
> 1.4.x.
Temperature
AI950
Temperature input, 4 x 1 channels, resistor
and thermocouple
> 1.2.x
> 1.4.x
Counter / Frequency
DP910
Frequency input and counter, 2 blocks
> 1.4.x
> 1.4.x
