Dual Channel Indication Leds - rotork Profibus Modbus Module Mk2 Installation Manual

Note: FR Mode -

Primary is offset from Backup address by 64.

When the card is powered 'on' Channel 1 will be the Primary channel. After power
up the card will seek a master to communicate with by alternating the channel 1
and 2 between Primary and Secondary mode. The switch over time increases with
each change to a maximum of 32 seconds. The card will continue to switch
channels using a 32 second switch over time until one channel receives PLC
messages. The channel addresses alternate at this point.

The PLC need not wait for a particular channel to be in Primary mode before
starting communications.

If the Primary channel fails the Backup will automatically adopt Primary address
and wait for messages from the master.

The Backup channel address can be used for exchanging data but any commands
to move the actuator directed to the backup address will be ignored.

If a configuration message is sent to the Backup address that is different to the
one sent to the Primary it will be accepted, but not carried out.

6.6 Dual Channel Indication LEDs

If the actuator cover is opened there are several LEDs on the circuit board that are used to indicate
communication activity. These indicate both the communication between the Profibus highway and the
card and the communication within the card's two main processors.
LED 4
LED 1
LED 5
Fig 35: Dual Channel Profibus card LED positions
LED Description
1 Channel 1 Data Exchange
2 Channel 1 RTS line
3 Inter-processor comms
EPROM
LK1
SK5 SK7
SK8
State
On (Red)
Off
On (Red)
Off
Flash (Red)
Off
Publication PUB088-005-00_1017
SK3
SK10
Function
In data exchange mode with PLC
Not in data exchange mode
Ready to reply to PLC
Not ready to respond
Inter-processor comms running
No inter-processor comms
Profibus Communication
LED 3
LED 6
LED 2
SK2
55 of 84