FP2−CCU

Interchangeability with the FP3 and Precautions

 

 

Interchangeability with the FP3 and Precautions

Hardware interchangeability

The user should be aware that there are some differences between the FP2 and FP3 Computer Communication Units.

−The DIP switch settings are different.

With the FP2 Computer Communication Unit, only the transmission speed and the character bit can be set with the DIP switches. The settings for the parity, the stop bit length, and whether or not the CS and CD control signals are effective are fixed as shown in the table below.

−There is no reset switch.

The FP2 Computer Communication Unit has no reset switch.

−Connections with serial devices are made in the same way for both units.

The specifications for the RS232C interface of the FP2 Computer Communication Unit are the same as those for the FP3.

−Two ports are provided, a “COM.1” port and a “COM.2” port. However, the COM.1 port is restricted on the functions as below.

 

COM.1

COM.2

 

 

 

Computer link function

Available

Available

 

 

 

Modem connection

Not available

Available

 

 

 

Data transmission

Not available

Available

 

 

 

Hierarchy command

Not available

Available

 

 

 

Software interchangeability

The software is interchangeable between the FP2 and FP3 Computer Communication Units.

−Program methods on the host side are largely the same.

There are some differences in the transmission formats, as described below.

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