rotork Profibus Modbus Module Mk2 - Dual Highway, Dual Channel - SR Mode

Profibus DP Mk2 Option Card Installation Manual
52 of 84 Publication PUB088-005-00_1017
LED
Description
State
Function
1
Channel 1 Data Exchange
On (Red)
Off
In data exchange mode with PLC
Not in data exchange mode
2
Channel 1 RTS line
On (Red)
Off
Ready to reply to PLC
Not ready to respond
3
Inter-processor comms
Flash (Red)
Off
Inter-processor comms running
No inter-processor comms
4
Diagnostic
Flash (Green)
Solid (Green)
Solid (Red)
Flash (Green)
PLC comms not present
Data being exchanged with PLC
Fatal Error
After solid green shows comms lost
6.4 Dual Highway, Dual Channel – SR Mode
When using the Simple or RedCom Dual Channel card the mode for communication has to be
selected between SR (System Redundancy) and FR (Flying Redundancy). This is chosen during
parameterisation by the GSD file values or by using a parameterisation utility such as FDT or PDM.
 Redundancy The default setting for redundancy is SR mode
In SR mode there are two highways and a redundantly configured PLC. The two channels on the card
both use the same address. One channel is in Primary mode whilst the other is in Backup mode. The
card is waiting for a communication message on the channel that is in Primary mode and the two
channels will switch their mode whilst searching for comms. There is no discrimination between
Channel 1 and Channel 2 to determine which is in Primary mode. The two channels will both try to
adopt Primary mode.
When using either the Simple or the RedCom dual channel card in SR mode the following must be
set up:
 Address The two channels share the same common address. With IQ and IQT
actuators the address can be set using the IrDA communication link
Fig 32: Single Channel Profibus card LED positions
SK5 SK7
SK10
EPROM
SK1
SK2
SK8
LK1
SK3
LED 3
LED 2
LED 4
LED 1