Setting Up the COM Communications Option

NOTICE
hazard of loss of communication Do not change the communication parameters on a system in operation. Failure to follow these instructions can result in data loss.

The communication parameters have default values that can or must be changed according to the needs of the installation or users.

When a COM communications option is used, it is necessary to:

Set up the COM communications option.
Authorize remote setting of the MicroLogic trip unit.
Authorize remote control of the circuit breaker.

Setting Up the Modbus Address

The Modbus address is a two-digit number identifying the MicroLogic P trip unit in a Modbus network.

NOTE: As soon as the communications option is connected, the trip unit recognizes it and displays the type of module on the graphic screen. Automatic time updates are possible only with the Modbus system.

The setting of the Modbus address depends on the COM option.

COM option	Modbus address	Modbus address range
BCM or BCM ULP not connected to IFM or IFE	The Modbus address is set up on the Modbus Com setting screen, with the parameters of the communication option (see below).	1 to 47
BCM ULP connected to IFM	The Modbus address is set up on the 2 address rotary switches on the front panel of the IFM.	1 to 99 Value 0 is forbidden because it is reserved for broadcasting messages.
BCM ULP connected to IFM with legacy firmware	The Modbus address is set up on the 2 address rotary switches on the front panel of the IFM.	1 to 47 Value 0 is forbidden because it is reserved for broadcasting messages. Values 48 to 99 are not allowed.
BCM ULP connected to IFE	The Modbus address is fixed and cannot be changed.	255

Step	Action
1	Press . The History, Maintenance and Setup menu opens. Press to select Com. setup
2	Press . The Com. setup menu opens. Press to select Com. parameter.
4	Press . The Modbus Com menu opens.
5	Use the navigation buttons to access and set the Address. Press to confirm he selection.
6	Set the Baud-rate, Parity and Connection in the same way.

Authorizing Remote Setup of MicroLogic

Step	Action
1	Press . The History, Maintenance and Setup menu opens. Press to select Com. setup
2	Press . The Com. setup menu opens. Press to select Remote settings.
3	Use the navigation buttons and to set Access permit to Yes. Press to confirm the selection and move to the Access code.
4	Enter the access code by using the navigation buttons and to select the first digit.
5	Press to confirm the selection and move to the following digit. Repeat steps 4 and 5 for the remaining digits.

NOTE: The access code is a password that must be provided by the supervisor prior to accessing the MicroLogic settings.

To authorize the remote setup of the MicroLogic trip unit equipped with a BCM or BCM ULP, access permit must be set to YES on the Remote settings screen.

NOTE: If the BCM or BCM ULP is connected to an IFM or IFE communication interface, the IFM or IFE locking pad must be set to UNLOCK (padlock open).

If the operator does not enter a specific access code, the default access code is 0000 and is requested by the supervisor.

Authorizing Remote Control of the Circuit Breaker

Step	Action
1	Press . The History, Maintenance and Setup menu opens. Press to select Com. setup
2	Press . The Com. setup menu opens. Press to select Remote control.
3	Use the navigation buttons to access and set Remote control. Manual Auto
4	Press to confirm the selection .

NOTE: It is possible to set circuit breaker control to local only (Manual) or to local and remote (Auto).

To authorize the remote control of the circuit breaker, Auto must be set on the Remote control screen.

If the circuit breaker is connected to other ULP modules, each ULP module must be set to authorize the remote control of the circuit breaker:

On FDM121 display unit, set the circuit breaker in remote control mode on the FDM121 Control menu
On IO module with predefined application 2 (breaker application), set the selector switches connected to the IO module inputs to:
- Remote control mode (I1 = 1)
- Enable close order (I4 = 1)
On IFM or IFE communication interface, the IFM or IFE locking pad must be set on UNLOCK (padlock open).

For more information on the communication option, refer to the:

ULP system user guide.
IO module user guide.
IFE user guide.
FDM121 user guide.