G120C is a programmable frequency converter by Siemens, widely used in the field of industrial automation. For devices controlled via the Profibus-DP communication protocol, the control word is a crucial parameter that defines how to interact with the frequency converter.
Profibus-DP Control Word for G120C
When using the Profibus-DP protocol with G120C, the control word typically consists of multiple bits, defined as follows (this is a common format; refer to relevant technical manuals for specific applications):
1.Control Word Bit Allocation (usually 16 bits):
1.Bit 0: Start Command
2.Bit 1: Stop Command
3.Bit 2: Reset Command
4.Bit 3: Start/Stop Request
5.Bits 4-7: Additional Functions (can be defined based on application)
6.Bits 8-15: Status Feedback (used to receive error status or other feedback information)
Common Command Examples for Control Word
Start/Stop Operations:
o Start: Set the start bit of the control word to 1.
o Stop: Set the stop bit of the control word to 1.
Reset Operation:
o By setting the reset bit, you can clear the fault state of the frequency converter.
Common Control Words and Status Words
