ProSoft Technology MVI56-DFCM - Manual (Page 44)

Ladder Logic MVI56-DFCM ♦ ControlLogix Platform
User Manual DF1 Half/Full Duplex Master/Slave Serial Communication Module
Page 44 of 106 ProSoft Technology, Inc.
September 24, 2014
Name Data Type Description
Parameter4 INT Fourth Parameter for the function
EventCmdStatusReturned INT (0=Fail, 1=Success)
EventBlockID INT Temporay variable to calculate event
block ID
SlaveControl DFCMSlaveControl Control Slave Polling for Slave
Status
TriggerSlaveControl BOOL Trigger to Enable or Disable Slaves
PortNumber INT Slave Address
NumberOfSlaves INT Number of Slaves
BlockNumber INT Block ID number
SlaveIndexes INT[200] Slave Indexes
NumberOfSlavesProcessed INT Number of Slaves processed
EnableSlaves BOOL Set 0 to Disable or 1 to Enable
Slaves
Port1Slave0Read BOOL Trigger to poll slave status
Port1Slave128Read BOOL Trigger to poll slave status
Port2Slave0Read BOOL Trigger to poll slave status
Port2Slave128Read BOOL Trigger to poll slave status
ModuleTime DFCMModuleTime Allows setting Module Time
Year INT Year (0 to 9999)
Month INT Month (1 to 12)
Day INT Day (1 to 31)
Hour INT Hour (0 to 23)
Minutes INT Minute (0 to 59)
Seconds INT Second (0 to 59)
GetModuleTime BOOL Trigger to read module time
SetModuleTime BOOL Trigger to set module time
Two arrays are allocated in the DFCM.STATUS object to hold the polling status
of each slave on the Master ports. This status data can be used to determine
which slaves are currently active on the port, which are in communication error,
or which have their polling suspended and disabled. Ladder logic in the
processor can be written to monitor and control the status of each slave on a
Master port, using the SlaveControl object in this user-defined data type.
Using special blocks, the processor can request current polling status for the
slaves. Through the use of other blocks, the processor can enable or disable the
polling of selected slaves.