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Elevator Core Reference Guide

Group 2 Communications - Modbus RTU

Parameter Number

Parameter Name

Units

Default

Available Settings

Access

Change During Run

Scaling

Size (Bytes)

CAN Register

CAN Sub Index

Modbus Register

P2-01

Modbus Slave Address

N/A

1

0 ... 247

RW

N

N/A

1

20C9h

0

201

P2-02

Modbus RTU Baud Rate

N/A

4: 115200bps

0: 9600bps

1: 19200bps

2: 38400bps

3: 57600bps

4: 115200bps

RW

N

N/A

1

20CAh

0

202

P2-03

Modbus RTU Data Format

N/A

0: n-1

0: n-1

1: n-2

2: 0-1

3: E-1

RW

N

N/A

1

20CBh

0

203

P2-04

Modbus Communications Loss Timeout

sec

1.0s

0.0 ... 5.0s

RW

N

1 = 0.1s

1

20CCh

0

204

P2-05

Communications Loss Action

N/A

0: Trip

0: Trip

1: Ramp to Stop the Trip

2: Ramp to Stop Only (No Trip)

3: Run at Inspection Speed (P8-09)

RW

Y

N/A

1

20CDh

0

205

P2-06

Modbus RTU Response Delay

N/A

0 char

0 ... 16 char

RW

N

N/A

1

20CEh

0

206

Sets the drive address when communicating over Modbus-RTU via the RJ45 port on the drive.

Sets the baud rate when Modbus-RTU communications is being used.

Value

Setting

Format

0

n-1

No Parity, 1 stop bit

1

n-2

No parity, 2 stop bits

2

0-1

Odd parity, 1 stop bit

3

E-1

Even parity, 1 stop bit

Sets the timeframe for a Modbus message to be sent to the drive before tripping.

Controls the behaviour of the drive following a loss of communications from either Modbus-RTU or CANopen.

Setting

Drive Display

Reaction

0

triP

Immediate trip

1

r-triP

Ramp to stop then trip

2

StoP

Ramp to stop only (No Trip)

3

InSPct

Run at Inspection Speed (P8-08)

Allows the user to configure an additional delay between the drive receiving a request via the Modbus RTU interface and transmitting a reply. The value entered represents the delay in addition to the minimum delay permissible according to the Modbus RTU specification, and is expressed as the number of additional characters.