Shinko IF-400, Instruction Manual

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When communication is not performed, the communication line for both host computer/PLC and controller 
are in data Receiving status. 

(*) Sending/Receiving switching time is determined by the selection of communication speed and 

  Sending/Receiving switching character. 

(e.g.) Communication speed: 9600bps 

Sending/Receiving switching character: 1 character 
If 1 character is 10 bits, then Sending/Receiving switching time will be 0.001 seconds (1ms). 

Communication timing 

The IF-400 performs control within the

communication time above. Therefore, if data is transmitted with a 

shorter interval than the Sending/Receiving switching time, normal communication cannot be performed. 
Set the Sending/Receiving time from the host computer side so that the next piece of data can be sent   
after the communication line is switched from Sending to Receiving status. 
 

Turn the power ON

The PWR indicator lights when power supply to the unit is switched on. 
Other indicators are unlit. (See Fig. 6-1) 

(Fig. 6-1) 

Basic setup operation

To proceed to the setup mode, press the          key. 
The unit will proceed to the “Communication speed selection” mode, and its characters will be 
indicated on the display. 
Make a selection using the     and     keys, and register the selected item with the          key. 
(See Fig. 6-2.) 

(Fig. 6-2) 

Unlit 

Lit 

Make a selection. 

Proceeds to the Setup mode, and 
registers the selected item.