Setting Parameters For The Modules; Error-Response Parameters - Aventics DeviceNet Description Du Système Et Notice D'emploi

90 AVENTICS | Bus Coupler AES/Valve Driver AV, DeviceNet | R412018138–BAL–001–AC
PLC Configuration of the Valve System
Response to an interruption
in DeviceNet communication
Response to a backplane
malfunction
You can write the bus coupler parameters acyclically with the following unconnected message.
Enter the following values in the PLC configuration software in the corresponding input field.
Table 12: Writing bus coupler parameters
Field name in the software window
Class
Instance
Attribute
5.5.1

Setting parameters for the modules

You can write and read out the parameters of the modules using the following settings
(see section 15.2.6 "Module object" on page 131):
Table 13: Writing and reading out module parameters
Field name in the software
window
Class
Instance
Attribute
The parameters and configuration data are not saved locally by the bus coupler. They must
be sent from the PLC to the bus coupler and the installed modules on startup.
5.5.2

Error-response parameters

This parameter describes the response of the bus coupler in the absence of DeviceNet
communication. You can set the following responses:
Switch off all outputs (bit 1 of the parameter byte = 0)
Maintain all outputs (bit 1 of the parameter byte = 1)
This parameter describes the response of the bus coupler in the event of a backplane malfunction.
You can set the following responses:
Option 1 (bit 2 of parameter byte = 0):
If there is a temporary backplane malfunction (triggered, e.g., by a spike in the power supply),
the IO/DIAG LED flashes red. As soon as the communication via the backplane is reinstated,
the bus coupler returns to normal mode and the warnings are canceled.
In the event of a sustained backplane malfunction (e.g. due to the removal of an end plate),
the IO/DIAG LED flashes red. The bus coupler simultaneously resets all valves and outputs.
The bus coupler tries to re-initialize the system.
– If the initialization is successful, the bus coupler resumes its normal operation. The IO/DIAG
LED is illuminated in green.
– If the initialization is not successful (e.g. due to the connection of new modules to the backplane
or a defective backplane), the initialization is restarted. LED IO/DIAG continues to flash red.
Option 2 (bit 2 of parameter byte = 1)
For temporary backplane malfunctions, the response is identical to option 1.
In the event of a sustained backplane malfunction the IO/DIAG LED flashes red. The bus coupler
simultaneously resets all valves and outputs. An initialization of the system is not started.
The bus coupler must be restarted manually ("power reset") in order to return it to normal mode.
Value in input field to write parameter
0xC7
0x01
0x01
Value in input field to write
parameter
0x64
0xNN
Corresponds with the module
number in hexadecimal coding
(e.g. module no. 15 = 0x0F)
0x03
Value in input field to read out
parameter
0x64
0xNN
Corresponds with the module
number in hexadecimal coding
(e.g. module no. 18 = 0x12)
0x05