Rockwell Automation 937CU-AISTR-DC1 Strain Gauge Converter Installation Instructions - Manual (Page 41)

The
Strain Gauge Converter can request the following information via the RS 485 interface e. g.
from a PC or a PLC (with 3 decimal places each):
• Net measured value (in the set unit
)
• Gross measured value (in the set unit)
• mV measured value ( in the set unit)
• Output value current output (in mA)
The following commands are available for the requests:
• Null: delete the receive buffer of the requesting device
• Check_1: checks whether
Strain Gauge Converter (with the respective address) is connected
• Get_value_ch1: requests the net measured value
• Get_value_ch2: requests the gross measured value
• Get_value_ch3: requests the mV measured value
• Get_current: requests the output value current output
Requests via the RS 485 interface are not suitable for time-critical or safety-critical
applications.
At the beginning of each RS
485 communication, send the request Check_1.
The RS 485 interface is deactivated if a connector is plugged into the programming
jack (RS
232 interface).
When the connector is removed, the request Check_1 is required to switch to RS 485
communication.
Warning
Note
Bul. 937
C Strain Gauge Converter Installation Instructions
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