Instructions

6 Operation
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6.3 Error mode
In the error mode, the program is stopped until the error cause is eliminated.
Tabelle 6.2 Error indication
Indication Cause
Remedy
ON
Program checksum error
Update the firmware
Retain memory error
System error
Re-load the user program in the device.
If it does not help, contact technical service
flashing
Overheating
Ensure the operation temperature according to
Tab. 3.6
6.4 I/O mode
In I/O mode:
– user program is stopped
– relay operates as I/O extension module
To use the relay as I/O module, the RS485 interface must be previously configured in ALP as a
slave. In I/O mode it is possible to read inputs and to control outputs, but there is no access to
network variables.
The I/O mode can be used for
– firmware update
– user program rewriting if it causes an incorrect operation of the device
To activate the I/O mode, turn the RUN/STOP switch (Fig. 6.3, Pos. 4) to STOP position.
To switch to normal operation the relay, turn the RUN/STOP switch to RUN position.
6.5 Real-time clock
A charged backup battery (Fig. 6.3, Pos. 2) ensures uninterruptable operation of the built-in RTC for
5 years. In the case of operation at a temperature near the limits of the operating range (Tab. 3.6),
the operating time of the battery is reduced. For battery replacement see sect. 8.2.
The time correction of RTC can be made in the configuration mask in ALP (see ALP HELP).