ViewSonic IFP9850 Gen 4 - 98" ViewBoard 4K Ultra HD Interactive Flat Panel IFP - Page 104
RS-232 Protocol, Description, RS-232 Hardware Specification
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RS-232 Protocol This document describes the hardware interface spec and software protocols of RS232 interface communication between ViewSonic LFD and PC or other control units with RS-232 protocol. The protocol contains three command sections: • Set-Function • Get-Function • Remote control pass-through mode NOTE: Below, "PC" represents all the control units that can send or receive the RS-232 protocol command. Description RS-232 Hardware Specification ViewSonic LFD communication port on the rear side: 1. Connector type: DSUB 9-Pin Male (or 3.5 mm barrel connector) 2. Use of crossover (null modem) cable for connection 3. Pin Assignment: Female DSUB 9-Pin Male DSUB 9-Pin Pin # 1 2 3 4 5 6 7 8 9 Signal NC RXD TXD NC GND NC NC NC NC Remark Input to Display Output from Display Provide +5V/2A power for external specific dongle *3.0 frame GND 3.5 mm barrel connector (alternative for limited space) Item Tip Ring Signal TXD RXD Sleeve GND Remark Output from Display Input to Display 104
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