ProSoft Technology 5105-103M-PDPS - Manual (Page 114)

Reference 5105-103M-PDPS ♦ ProLinx Gateway
User Manual IEC 60870-5-103 Master to PROFIBUS Slave Gateway
Page 114 of 144 ProSoft Technology, Inc.
November 24, 2010
Mailbox From PLC to Gateway
Start Byte End Byte Description
0 0 Block number of data in block
1 1 Block number of data requested
2 198 Data for block
199 199 Block number of data in block
Mailbox From GW to PLC
Start Byte End Byte Description
0 0 Block number of data in block
1 1 Last block number received from PLC
2 197 Data for block
198 198 Events in buffer (0 to 99)
199 199 Block number of data in block
Example Raw Database Exchange from PLC
Start Byte End Byte Description
0 0 150 (Raw data write)
1 1 160 (Raw data read)
2 3 Start register in database for write
4 5 Number of registers to write (1 to 94)
6 7 Start register in database for read
8 9 Number of registers to read (1 to 96)
10 197 Words to write to the database
198 198 Reserved for future use
199 199 150 (Raw data write)
Example Response Block From GW
Start Byte End Byte Description
0 0 160 (Raw data read)
1 1 150 (Raw data write)
2 3 Start register in database for read
4 5 Number of registers to read (1 to 96)
6 197 Words read from the database
198 198 Events in buffer (0 to 99)
199 199 160 (Raw data read)