Siemens MOBY FC 56 Technical Description page 133

Schematic sequence (example WRITE):
1st acknowledgement telegram from ASM to user
The user processes the ack-
nowledgement and issues the
2nd command segment
2nd acknowledgement telegram from ASM to user
The user processes the ack-
nowledgement and issues the
3rd command segment
3rd or last acknowledgement tel. from ASM to user
The command has been
processed
FC 56
J31069-D0155-U001-A0-7618
Programming MOBY-ASM on PROFIBUS-DP-V1
CC CI ADB DBN
'I' 0003 0001
1st command telegram from user to ASM
The command consists of three telegram segments
CC CI ADB DBN
00 0003 0001
CC CI ADB DBN
'I' 0003 0002
2nd command telegram from user to ASM
CC CI ADB DBN
00 0003 0002
CC CI ADB DBN
'I' 0003 0003
3rd or last command telegram from user to ASM
CC CI ADB DBN
00 0003 0003
File description
DBL
User data
Processing of 1st telegram
segment by the filehandler on
the ASM
DBL
00
DBL
User data
Processing of 2nd telegram
segment by the filehandler on
the ASM
DBL
00
DBL
User data
Processing of last telegram
segment and terminating the
command by the filehandler
DBL
on the ASM
00
B-11