Configuration manual

Basic information

AMB-8I-4O is an I/O expander operating over Modbus RTU and IEC60870-5-101 protocol. The first DIP switch is used to switch between Modbus RTU and IEC modes. If it is in position 0, then the AMB is operating in Modbus RTU mode. If it is in position 1, then it works in the IEC protocol. As the two protocols have different functions, the DIP switch is also different. In IEC mode, the last DIP switch is used to change the operating mode from balanced/unbalanced. To save the DIP switch settings in the internal memory, the SAVE button must be pressed.

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Configuration

DIP switch configuration

This is DIP switch functions diagram for Modbus RTU configuration. For enable Modbus RTU protocol 1 switch should be in OFF position.

This is DIP switch function diagram for IEC protocol. For enable IEC protocol 1 switch should be in ON position.

Parity configuration

Parity configuration for both Modbus and IEC.

Parity	Function
00	NONE
01	ODD
10	EVEN
11	NONE

Baudrate configuration

Baudrate configuration for both Modbus and IEC

Switch	Baudrate
0000	9600
0001	1200
0010	2400
0011	4800
0100	14400
0101	19200
0110	28800
0111	38400
1000	57600
1001	76800
1010	115200
1011	230400
1100	256000
1101	460800
1110	576000
1111	921600