ProSoft Technology MVI46-PDPMV1 - Manual (Page 68)

Mailbox Messaging MVI46-PDPMV1 ♦ SLC Platform
User Manual PROFIBUS DPV1 Master
Page 68 of 160 ProSoft Technology, Inc.
March 25, 2011
Slave Address
Range 1 to 125; 127
If the request applies for only one slave, that slave address must be entered in
the range 1 to 125. If a slave group is to be addressed, slave address should be
127 (multicast address).
Group Select
Range 01h to FFh (Bit Coded)
This parameter determines which group to address. Refer to the following
example:
b7 b6 b5 b4 b3 b2 b1 b0
Group 8 Group 7 Group 6 Group 5 Group 4 Group 3 Group 2 Group 1
Example:
To address Group 1, 2, and 4, the Group Select value should be D0h. If an
individual slave should be addressed, the correct group selection must also be
made, because the slave will ignore the message if it does not belong to the
requested group(s).
What group(s) a slave belongs to is determined during network configuration,
and is downloaded during initialization to each slave via the PROFIBUS telegram
Set_Prm.
Control Command
This parameter specifies the command to send:
Bit Explanation
0 (LSB) Reserved, set to zero
1 Reserved, set to zero
2 Unfreeze input data
3 Freeze input data
4 Unsynchronize output data
5 Synchronize output data
6 Reserved, set to zero
7 (MSB) Reserved, set to zero
Combinations of the bits (Unsync/Sync and Unfreeze/Freeze)
Bits 0 or 6 Bits 1 or 7 Explanation
0 0 No function
0 1 Function will be activated
1 0 Function will be inactive
1 1 Function will be inactive