Schneider Electric LUFP7 user manual Configuring the Motor Starters, Modbus Cycle Time

4. Software Implementation of the Gateway

4.1.2. Configuring the Motor Starters

Each motor starter should be configured as follows:

Protocol:	Modbus RTU slave
Modbus address	1 to 8
Bitrate	19,200 bits/s
Data bits	8

Start bits	1
Parity	None
Parity bit	0
Stop bits	1

When using a TeSys U motor starter with a Modbus communication module (LULC031 module), the configuration parameters for the RS485 connection are automatically detected, only the Modbus address of the motor starter needs to be configured.

4.1.3. Modbus Cycle Time

The LUFP7 gateway’s default configuration sets a cycle time of 300 ms on Modbus commands for each of the 8 TeSys U motor starters.

4.1.4. Managing Degraded Modes

The default management for degraded modes is described below. This description only applies to a Premium PLC fitted with a TSX PBY 100 coupler. Please refer to chapter 6.11.2.1 Managing degraded modes, page 71, if you want to change the degraded mode management of one or several Modbus commands.

Desired

behaviour

Reset

Output

Hold

Inputs Reset

Event

Premium PLC:	Disconnection	Failure of the	Disconnection of
	of the upstream		the downstream
CPU stop or failure		LUFP7 gateway
	Profibus-DP network		Modbus network
“Outputs” option	Yes
equal to “Reset” (1)		Depending on the configuration of the
“Outputs” option	——	TeSys U motor starters (2)
equal to “Hold” (1)
——		Yes

(1)The “Outputs” option is described in chapter 4.2.8 Importing the Configuration of the Profibus-DP Network under PL7 PRO, page 31. Under PL7 PRO, it can be accessed from the configuration screen for the TSX PBY 100 board.

(2)The desired behaviour with regard to the outputs should be directly configured on each of the TeSys U motor starters.

You may also refer to chapter 4.2 Degraded application mode of the Implementation manual – TSX PBY 100 – PROFIBUS-DP(ref.: TSX DM PBY 100E) for further details regarding the processing of degraded modes by the TSX PBY 100 board.

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