MVI46-PDPS ♦ SLC Platform
Reference
Profibus DP Slave Communication Module
User Manual
ProSoft Technology, Inc.
Page 44 of 53
Normal Data Transfer
This version of the module provides for direct access to the data in the module. All data
related to the module is stored in the module’s M1 file. To read data from the module,
use the COP instruction to copy data from the module’s M1 file to a user data file. To
write data to the module, use the COP instruction to copy data from a user file to the
module’s M0 file.
If the read/write handshake bits are equal, the module owns the M-files. If they are not
equal, the SLC owns the M-files. Using this exclusive ownership, data integrity is
maintained over the whole PROFIBUS data areas.
Input Data Control
Word
Bit
Definition
0
0
Initialization Request (0=module not active, 1=module ready to
run/running)
1
Initialization Compete (0=module not processed initial data,
1=module processed initial data)
2
Input read/write handshake bit
3 to 15
Not used
1
0 to 15
Not used
Output Data Control
Word
Bit
Definition
0
0
Initialization Compete (0=initial data not set, 1=initial data set)
1
Not used
2
Output read/write handshake bit
3 to 15
Not used
1
0 to 15
Not used
