ProSoft Technology 5204SE-MNET-PDPMV1 - Manual (Page 126)

5204SE-MNET-PDPMV1 ♦ ProLinx Gateway Reference
Modbus TCP/IP to PROFIBUS DP-V1 Pass-Through Master User Manual
Page 126 of 235
ProSoft Technology, Inc.
December 22, 2009
Similarly, a freeze control acyclic message causes the addressed slaves to
assume freeze mode. In this operating mode, the states of the inputs are frozen
until the master sends the next freeze acyclic message. Freeze mode is
concluded with the unfreeze acyclic message.
Note 1: It is only possible to send Sync and Freeze control acyclic messages when operating
mode is either "CLEAR" or "OPERATE".
Note 2: Not all slaves support this feature. Refer to the documentation for the actual slave for more
information.
For additional details, see Set Slave Mode Message Structure (page 206).
MNETDPV1_MAILVAR_SetSlaveMode Variables - M340
This variable structure is the one to use with your control and sequencing logic
when you want to send a request to the PROFIBUS Master to send Sync and
Freeze control messages to a slave or group of slaves.