Pro-face GP4000 Series Replacement Manualbook page 49

4.6.2 When using a RS-422 connection cable
GP-477RE System Configuration (connecting to COM1)
GP-4501T/TW System Configuration (connecting to COM2)
IMPORTANT
Before connecting to GP-4501T/TW, be sure to change the port setting to
[COM2] on Device/PLC Setting of GP-Pro EX. Please check the communication
setting with GP-Pro EX Device/PLC Connection Manual just in case.
(http://www.pro-face.com/otasuke/files/manual/gpproex/new/device/index.ht
m)
To replace GP-477RE with GP-4501T/TW, prepare the following item.
Product Name
RS-422 9-pin/25-pin Conversion Cable (20cm)
49/55
Model
PFXZCBCBCVR41