Pro-face GP-3500 Series Replacement Manualbook page 42

・ The cable used for connection to GP-3500 series via COM2 can be used for
GP-4500 series with a COM Port Conversion Adapter (CA3-ADPCOM-01) added in
the following cases;
In all other cases, the operation is not guaranteed and it's recommended to
prepare a new connection cable. To check the cable diagram, please refer to
GP-Pro EX Device/PLC Connection Manual.
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