5
Chapter 2. WIRING
● Connector signal table
Handling Precautions
• Either pin No. 6 and pin No. 9 is able to connect as SG.
• For details on wiring way, see the CMQ-V Series Digital Mass Flow
Controller user's manual No. CP-SP-1204E or CMQ-V Series Digital Mass
Flow Controller (for Hydrogen and Helium Gases) user's manual No. CP-
SP-1205E.
Pin Signal name Description Remarks
number
20 +5V (5mA max.) 5Vdc reference voltage output 5mA max.
19 FLOW OUT Instantaneous flow rate (PV) 0 to 5Vdc/ 1 to 5Vdc/ 0 to 20mAdc/
voltage output/ setting flow rate 4 to 20mAdc
(SP) output
18 A.GND Analog ground Common of analog signals
17 FLOW SP INPUT Instantaneous flow rate setting 0 to 5Vdc/ 1 to 5Vdc/ 0 to 20mAdc/
(SP) voltage input 4 to 20mAdc
16 MODE INPUT External 3-stage switching input 3-stage switching input of Open/ GND/ 5V
15 DI3 External contact input 3 Switching input of Open/ GND
14 DI2 External contact input 2
13 DI1 External contact input 1
12 EV2 OUT Event output 2 Open collector non-insulated output
11 EV1 OUT Event output 1
10 ALM OUT Alarm output
9 SG (D.GND) RS-485 communications SG Same as the common of digital signal
8 DB RS-485 communications DB
7 DA RS-485 communications DA
6 SG (D.GND) RS-485 communications SG Same as the common of digital signal
5 TEST For test For test (connecting is prohibited)
4 POWER GND Power supply ground In order to decrease the voltage drop
3 POWER GND Power supply ground
caused by wiring resistance, connect each
2 POWER (24V) Power supply +24Vdc
two wires to the power supply in parallel.
1 POWER (24V) Power supply +24Vdc
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