JVC VN-E4U Instruction Manual - Page 18

Preparation (continued) Ⅵ4-3 [COM1,2] Serial Port Terminals CONTROL 2CH COM1 SERVICE COM OUTPUT RS-232C RS-485 4CH COM2 10BASE Connect the device (camera, etc.) to be controlled to the serial port. Use the switch to switch between RS-232C and RS-485. ● Pin Layout Pin No. When RS-232C is selected Name Function When RS-485 is selected Name Function 1 (NC) (Not in use) RX+ + Receiving End 2 RXD Receive data RX - - Receiving End 3 TXD Send data TX - - Sending End 4 (NC) (Not in use) TX+ + Sending End 5 GND Grounding GND Grounding 6 (NC) (Not in use) (NC) (Not in use) 7 (NC) (Not in use) (NC) (Not in use) 8 (NC) (Not in use) (NC) (Not in use) 9 (NC) (Not in use) (NC) (Not in use) Ⅵ4-4 Alarm Input CONTROL ALARM SERVICE OUTPUT COM OUT 1 2 3 4 G INPUT PUSH RESET 10BASE-T/100BASE-TX DC 5V For connecting the sensor. This consists of 4 input and 1 ground terminals. Either Make or Break is selected depending on the setting, and sensors of the no-voltage A contact output (normally open), no-voltage B contact output (normally closed) or novoltage C contact output type may be used. Ⅵ4-5 Alarm Output COM1 COM2 A CONTROL SERVICE OUTPUT COM OUT 1 2 3 4 G I PUSH RESET 10BASE-T/100BASE-TX DC 5V The [OUT] and [COM] terminals form the make contact. Connect the device that is to be turned on during an alarm. Alarm output changes to break when the power of VN-E4 is turned off. Upon starting up VN-E4, the alarm output is restored to the previous state.(A pg. 54, A8. SpecificationsB) 18