Toshiba MDB-100 7. Network Characteristics Configuration

7. Network Characteristics Configuration

The MDB-100 interface board uses an 8-position DIP switch (labeled SW1) to configure the Modbus network communication characteristics. The switch settings are only read during initialization, so if a change is made to any of the switches on SW1, the MDB-100 must be reset in order to enable the new settings. The various configuration settings of switch SW1 are as follows:

Communication Method:

SW1 #	Function
1

OFF		Modbus RTU (factory default)
ON		Modbus ASCII
Baud Rate:
	SW1 #			Function
4	3		2
OFF	OFF		OFF	300 baud
OFF	OFF		ON	600 baud
OFF	ON		OFF	1200 baud
OFF	ON		ON	2400 baud
ON	OFF		OFF	4800 baud
ON	OFF		ON	9600 baud (factory default)
ON	ON		OFF	19.2 kbaud
ON	ON		ON	38.4 kbaud
Parity:
SW1 #				Function
6	5
OFF	OFF		even parity (factory default)
OFF	ON		odd parity
ON	OFF		no parity (2 stop bits)
ON	ON		no parity (1 stop bit) - applies only to RTU mode

Protocol:
SW1 #	Function
7

OFF	Modicon Modbus (factory default)
ON	DO NOT SELECT (reserved for future expansion)
Station Number Origin: (refer to section 8)
SW1 #	Function
8
OFF	Drive A’s inverter number parameter (factory default)
ON	Switch SW2 address setting
	11