After switching on the power supply, the bus alarm can be suppressed for a definable period of
time. The setting depends on the time passing at the bus master between return of voltage and
start of communication via the bus.
Parameters
Factory setting
Set value
Start td
15 s
Tab. 78 Setting the
Starttd parameter
SIGMA CONTROL 2 monitors the bus communication at log level (SIGMA CONTROL 2). If there is
a check box behind
Communication error, this monitoring in the Send mode can be switched off by
deactivating the check box.
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 the check box to enable monitor‐
ing.
Parameters
Factory setting
Set value
Timeout
5 s
Monitoring
Check box ☑ activated
Tab. 79 Setting the
Timeout parameter
➤ Enter the required settings, as described above.
8.7.3.8 Activating the remote control
➤ Activate remote control see chapter 8.2.13.
Result SIGMA CONTROL 2 remote control is activated.
8.7.4 Master control of two machines in master/slave operation
Two machines with SIGMA CONTROL 2 work as master/slave in the same air network. The mas‐
ter controls the machine with the controller configured as slave.
For both machines to work in redundancy operation, the electrical connections and the set‐
tings at both controllers must be identically created and configured.
If two machines with SIGMA CONTROL 2 are to work in master-slave mode, their controllers
must have the same software version.
➤ Follow the configuration steps as described in table 80:
Controller
Procedure
Chapter
Both
Establishing the electrical connection
Both
Set IP addresses for Ethernet
Both
Setting the controller as master or slave
Both
Set the target pressures for both.
Slave
Activating the remote control
Both
Setting the load balancing
Tab. 80 Master-slave settings
8
Initial Start-up
8.7
Setting the machine for master control operation
No.: 901700 14 E
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 4.0.X
117
