Siemens SINUMERIK 828D Function Manual page 888

P3: Basic PLC Program for SINUMERIK 840D sl
13.8 Structure and functions of the basic program
The bit address is generated correspondingly from the first M function ("MFirstAdr") to the last M function
("MLastAdr") from bit 0 up to maximum bit 15 for each group.
Each entry in the decoding lists consists of 3 parameters, each of which is assigned to a group.
Assignment of groups
Extended
Group
M address
1 MSigGrp[1].MExtAdr
2 MSigGrp[2].MExtAdr
... ...
16 MSigGrp[16].MExtAdr
Type and value range for signals
Signal Type
MExtAdr Int
MFirstAdr DInt
MLastAdr Dint
Signal list
Data block DB 76 is set up when the function is activated.
A bit is set in the appropriate group in DB 76 for an M signal decoded in the list.
At the same time, a read­in disable is set in the channel in which the M function has been output.
Example
Three groups of M commands are to be decoded in the following example:
• M2 = 1 to M2 = 5
• M3 = 12 to M3 = 23
• M40 = 55
888
First M address in group
MSigGrp[1].MFirstAdr
MSigGrp[2].MFirstAdr
...
MSigGrp[16].MFirstAdr
Value range
0 ... 99
0 to 99.999.999
0 to 99.999.999
Last M address in group
MSigGrp[1].MLastAdr
MSigGrp[2].MLastAdr
...
MSigGrp[16].MLastAdr
Remark
Extended M address
First M address in group
Last M address in group
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions