User Manual

Table Of Contents
Appendix 105
Mailbox Command References
WAGO-I/O-SYSTEM 750
I/O Modules
6.3.2 Block Transfer
6.3.2.1 Download Start of a Block (DLD_START, 0x01)
The block transfer starts with the call up. A new DLD_START with no previ-
ous DLD_END breaks the transfer off and initializes a new transfer. The
command block is concluded by DLD_END.
Conditions
Mailbox size Operating mode/profile Device role
6 12 18 Config.
Real-
time
Ad hoc Master Slave
Save
config.
Restart
- - - -
Request
Byte 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
0 MBX_DLD_START
1 T -
2 MBX_MB3
3 MBX_MB4
4 MBX_MB5
5 MBX_MB6
Arguments
Operating
mode
Parameter Value Description
MBX_MB3 0x01 Block type: RAM block
0x06 Write / read configuration
0x07 Read query result
0x09 Read name of the remote bus module
0x0A Read / write complete name of the local bus module
MBX_MB4
0x0B Read / write password of the local bus module
MBX_MB5 0x00 Number of the block in the whole transmission (LSB)
bit 0…5 Number of the block in the whole transmission (MSB)
0x80 - download, write to the module
(bit 6=0, bit 7=1)
Configur-
ation mode
MBX_MB6
bit 6, 7
0xC0 - upload, read from the module
(bit 6=1, bit 7=1)