SMC Networks EX122-SDN1, EX124D/U-SDN1, EX120-SDN1, EX121-SDN1 operation manual Wiring and Setting

SMC CORPORATION

Doc.No.EX##-OME0015

SI unit I/O data (Receiving and sending data of polled command)

Item		Output(Poll request)	Input(Poll response)
Occupied byte		2 byte	2 byte
		(Solenoid valve output)
Sending/	Address +0	Output No. 0 to 7
receiving data	Address +1	Output No. 8 to 15

*) Mapping method of sending / receiving data is different by PLC.

For further information, refer to the manual for PLC master (scanner)

		Bit of each output data and corresponding solenoid valve no.
	Offset	MSB								LSB
	0	No.7		No.6	No.5	No.4	No.3	No.2	No.1	No.0
	1	No.15		No.14	No.13	No.12	No.11	No.10	No.9	No.8
2-3. Applicable solenoid valve series
	SI unit		Valve series
	EX120		VQ1000, VQ2000
	EX121		VQ1000, VQ2000, SX3000, SX5000
	EX122		SY3000, SY5000
	EX124U/D		VQ2000, VQ4000, VQ5000

3. Wiring and Setting

3-1.Connection type

DeviceNet can be connected by T branch, Multi branch, Branch line branch and Multi drop. Total extension length of trunk and Branch line is different for different Baud rate and thickness of communication cable.

Main line

Terminal resistance Terminal resistance

Multi branch

Branch

line

Node Node

Node

Node

Node

Branch

line

	Branch line
T branch	branch
	Node
Node	Node

Branch

line

Length of cable

Node

Communication		Baud rate	Total length of	Length of	Total length of
distance			trunk	branch line	branch line
	Thick cable	500 kbps	100m or less	6m or less	39m or less
		250 kbps	250m or less		78m or less
		125 kbps	500m or less		156m or less
	Thin cable	Common	100m or less	――――――
Terminal resistance			121 ohm (1/2W)

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