Profibus Actuator Control Profibus DP Option Card Installation Manual
Profibus Actuator Control Profibus DP Option Card Installation Manual
Profibus Actuator Control Profibus DP Option Card Installation Manual
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<strong>Profibus</strong> <strong>DP</strong> Mk2 <strong>Option</strong> <strong>Card</strong> <strong>Installation</strong> <strong>Manual</strong><br />
6.5 Single Highway Dual Channel – FR Mode<br />
On either the Simple or RedCom dual channel card the mode for communications may be set to FR<br />
(Flying Redundancy) in some cases. This will require the card’s GSD file to be changed or the<br />
parameter value altered by a PDM or FDT utility.<br />
Redundancy SR is the default mode, it must be altered for FR mode<br />
In FR mode there is one highway and a single PLC can be used. The two channels on the card use<br />
addresses offset by 64. One channel is in Primary mode and uses the base address whilst the other is<br />
in Backup mode using the base address plus 64. As with SR mode, the card is waiting for a<br />
communication message on the channel that is in Primary mode and the two channels will switch their<br />
mode whilst searching for comms. There is no definition between Channel 1 and Channel 2 to<br />
determine which is in Primary mode. The two channels will both try to adopt Primary mode. The<br />
difference here is that the PLC can communicate with the backup using a different address.<br />
When using either type of dual channel card in FR mode the following must be set up:<br />
Address The two channels have address offset by 64. Setting the base<br />
address will set the offset address. With IQ and IQT actuators the<br />
address can be set using the IrDA communication link directly with the<br />
actuator and the IQ setting tool. For all actuator variants the address<br />
can be set over the highway using a Class 2 master.<br />
Baud Rate This is selected by the PLC, both channels adopt the same baud rate<br />
Slave Configuration One of the 10 configurations for the slave must be chosen. Both<br />
channels will use the same configuration setting.<br />
Configuration can only be carried out on the Primary channel.<br />
<br />
Basic Parameterisation The basic parameters such as deadband and motion inhibit<br />
time can be set using either the GSD file or a suitable PDM or FDT<br />
utility. The default settings will be suitable for most systems. Both<br />
channels will adopt the same settings.<br />
Parameterisation can only be carried out on the Primary channel.<br />
IDATA4 Bit 5 indicates the channel status and will show if the channel<br />
in communication is the Primary or Backup.<br />
FR<br />
Master PLC<br />
Standby PLC<br />
Highway 1<br />
Primary Backup<br />
address # =n address # = 64+n<br />
<strong>Profibus</strong> <strong>Card</strong><br />
Fig 25: Flying Redundancy – One highway redundancy<br />
46 of 66 Publication S420E V3.0 Issue 01/05