User Manual

PROFIBUS - layer 2 commands
DSAP service data to the module (ReqDataUnit) data from the module
(ResDataUnit)
read device identification
0 ident no data <ident>
read status information
10 SRD no data <status>
read device information
11 SRD no data <Ginfo>
read channel information
12 SRD <channel number> <Kinfo>
read data from a channel
13 SRD <channel number.> <Kx>
write data to a channel
SRD <channel number> <Px> response without data
14 SDA <channel number> <Px> pos./neg. acknowledge
SDN <channel number> <Px> no response
tare / reset a channel
SRD <channel number> response without data
15 SDA <channel number> pos./neg. acknowledge
SDN <channel number> no response
read, write and tare / reset channels
SRD [<tare/reset>[<P1>[... [<Pn>] ] ] ] <status> <K1> ... <Kn>
0 SDA [<tare/reset>[<P1>[... [<Pn>] ] ] ] pos./neg. acknowledge
SDN [<tare/reset>[<P1>[... [<Pn>] ] ] ] no response
Table 11.12 PROFIBUS - layer 2 commands
Note: If more data are in the ReqDataUnit as required, they will
be ignored.
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