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Modbus card quick guide – PowerWalker Modbus Card 2 User Manual

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Modbus Card Quick Guide

V.2.5

3. Installation and Operation

Follow below steps to install and use this modbus card:
1. Configure Modbus ID (Refer to section 4.1 for the details)
2. Configure communication format (Refer to section 4.2 for the details)
3. Insert this modbus card into intelligent slot
4. Connect modbus card to computer with RJ45 cable, and it is not necessary to turn the UPS

or PV inverter off. (Refer to section 4.5 for the details)


4. Configuration

4.1 Machine ID Configuration


4.2 Communication Format Configuration

Function

Bit Setting

Meaning

Baud
rate

# 2

# 1

OFF

OFF

2400bps

OFF

ON

4800bps

ON

OFF

9600bps

ON

ON

19200bps(default)

Parity

check

# 4

# 3

OFF

OFF

Even parity

ON

OFF

Odd parity

OFF

ON

No parity check 1 stop bits

(Default)

ON

ON

No parity check 2 stop bits

There are eight bits to present ID of each card.
Use SW1 to set machine ID. From left to right, it’s
8 to 1. As shown, when the switch is pushed
down, the bit is set to “one”. Otherwise, the bit is
set as zero. The ID of modbus card is set to 0x01
as chart. Please check appendix for detailed ID no.
and SW1 setting.