In
Send/Receive
or
Master
modes, SIGMA CONTROL 2 can monitor:
Com-Module
the bus com‐
munication at user level. For this purpose, the bus master reads a value ("toggle bit") that changes
with every bus cycle and returns it without change. SIGMA CONTROL 2 returns a bus alarm if the
bit does not change for a time longer than set (
Timeout
). Activate monitoring by setting a check
mark ☑.
For the connection to a SIGMA AIR MANAGER, set the following:
Parameters Factory setting Set value
Timeout 5 s 5 s
Monitoring Check box ☑ activated Check box ☑ activated
Tab. 67 Setting the
Timeout
parameter
➤ Enter the required settings, as described above.
8.7.3.3 Commissioning the Modbus module
Machine
Precondition Access level 2 is activated.
The network parameters are known. Request the required information from your IT department.
1. Open the 8.2
<Communication – Com-Module>
menu.
2. Activate the
Com-Module Start
check box.
The communication module is activated. The system detects the communication module type
and displays it in the
Type
line.
3. Select the data exchange direction:
► SIGMA CONTROL 2 ⇆ Bus master (SIGMA CONTROL 2 sends process data and receives
control data):
Send/Receive
or
Master
: Set
Com module
.
► SIGMA CONTROL 2 → Bus master (SIGMA CONTROL 2 sends process data):
Send
or
Master
: Setting
SAM/JSON-RPC
.
4. Set the slave address (
Slave No.
:).
5. Set the required reaction in the event of a bus fault (see next chapter, “Reaction in a PROFI‐
BUS bus fault”).
6. Set the bus parameters.
Set the baud rate, number of stop bits, parity, time-out and mode as required by the bus mas‐
ter. See chapter 2 for the setting options and the default settings.
7. Start the communication module with the set parameters:
8. Activate the
Reset
check box.
The communication module is started with the set parameters.
Communication with the bus master is running.
9. Time-out at bus fault is activated.
Bus communication is now monitored. The number behind
Status Counter (Run
) continuously
changes during communication.
Reaction in a bus fault
Only for machines.
8 Initial Start-up
8.7 Setting the machine for master control operation
108
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 2.5.3 No.: 901700 10 E
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