CANopen
6 Parameter setting
6-59
L BA2175 EN 2.0
6.6.3 9300 servo PLC
AIF control / status byte
Controller and fieldbus module can exchange control and status information. For this, the AIF
protocol provides so-called control bytes and status bytes.
Thanks to “Drive PLC Developer Studio” (DDS)theuser can directly access the status byte via the
control configuration of the AIF module. The 2175 fieldbus module writes its error messages to this
byte.
The PLC programmer must ensure that these error messages are indicate by means of an
error-warning-message firmware module.
Assignment of the C2121 AIF status byte for the 2175 fieldbus module
AIF status bit Function
0 CE11 error
1 CE12 error
2 CE13 error
3 CE14 error
4 Operational
5 Pre-operational
6 Warning
7 Internally assigned
The control byte is used to send messages and commands from the controller to the 2175 fieldbus
module.
The control byte can be accessed via code C2120. The commands are defined as numbers. Some
of the command numbers apply to all fieldbus modules, others only apply to certain modules.
Altogether up to 16 commands can be used.
Order number
in C2120, bit0..3
Function R/W code
0 No command
1 New initialisation of optional module all
2 Update of all relevant codes for the current optional module. No new init. all
10 XCAN-OUT cycle times or boot-up time accepted C2356
11 Monitoring times accepted C2357
12 TX mode accepted C2375
13 HMIs accepted C2376-C2378
14 CE error configuration accepted C2382
AIF control byte assignment for the 2175 fieldbus module
C2120 is automatically reset to 0 after the command has been transferred to the optional module,
i.e. toggle bits are not required. The command itself is written to the 4 last bits of the control byte,
i.e. 4 bits are available for future entries.
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