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6. Operation
Do not remove or replace the microSD
Caution
card while the PLC CPU is switched on.
The USB ports of the PLC CPU cannot be
Note
used for other USB devices.
The CIU 850 transfers data to GRM once the
hardware installation and GRM commissioning have
been completed. If the gateway to GRM could not be
created or is lost, check the status of the LEDs. See
sections
6.1 Communication status LEDs
and section
CPU status LEDs
The GRM server monitors the GRM gateway and has
basic knowledge about the status of the Modbus-
GRM PLC. It also ensures that the GRM gateway
application is aligned with the GRM server and kept
up-to-date.
The CIU 850 software is stored on the microSD card
in slot 1.
6.1 Communication status LEDs
The PLC CPU extension module has four status
LEDs showing the connectivity to the GRM server
and to the Modbus devices. See fig. 1.
LED
Description
Connection to
LED1
GRM
Connection to
LED2
Modbus device
LED3 GRM activity
Connection to
LED4
GRM
to
6.3 PLC
8. Fault
finding.
On
Off
Established
Never
once
established
Not
Established
established
Active
Not active
Connection
Connection
ok
lost
6.2 Ethernet status LEDs
The status LEDs are to the left of both Ethernet
ports. See fig. 1.
LED
Description
Link activity,
LED5
Ethernet port 1
Network
LED6
speed,
Ethernet port 1
Link activity,
LED7
Ethernet port 2
Network
LED8
speed,
Ethernet port 2
6.3 PLC CPU status LEDs
The PLC CPU has status LEDs on the front. See fig.
1.
LED
Description
PWR
Power supply
HDD1
MicroSD 1
7. General data
Permissible ambient
temperature
Supply voltage [V]
Frequency [Hz]
Dimensions of DIN rail [mm]
(w x h x d)
Dimensions of CIU 850
[mm] (w x h x d) as in fig.
Enclosure class
On or
Off
flashing
Active
Not active
100 Mbits/s
10 Mbits/s
Active
Not active
100 Mbits/s
10 Mbits/s
On
Off
Active
Not active
Available
Not available
-25 °C - +60 °C
100-240 AC
50/60
250 x 35 x 7.5
209 x 100 x 111
3
IP20
5
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