Connections

Section 4-4

Setting a Transmission Delay

A transmission delay can be set in the PC Setup to create a minimum interval between sending a response from the PC to a Host Link command until the be- ginning of sending the response to the next command.

The delay is not used in the response to the first command. The delay will affect responses to other commands only if the normal time for the response comes before the time set for the transmission delay has expired.

If the delay time has already expired when the next command is received, the response will be spent immediately. If the delay time has not expired, the re- sponse will be delayed until the time set for the transmission delay has expired.

The operation of the transmission delay for responses to host commands is illus- trated below.

Transmission delay

Transmission delay

Transmission delay

 

 

Response sent

Response sent

Response sent

Response sent

 

Response to

Response to

Response to

Response to

Time

1st command

2nd command

3rd command

4th command

 

The transmission delay will also be effective in PC-initiated communications as a minimum interval between sending commands to the host.

The delay is not used in sending the first command. The delay will affect other commands only if the time set for the transmission delay has not expired when the next command is ready to be sent.

If the delay time has already expired when the next command is ready, the com- mand will be spent immediately. If the delay time has not expired, the command will be delayed until the time set for the transmission delay has expired.

The operation of the transmission delay for PC-initiated communications is illus- trated below.

Transmission delay

Transmission delay

Transmission delay

 

 

Command sent

Command sent

Command sent

Command sent

 

1st TXD(––)

2nd TXD(––)

3rd TXD(––)

4th TXD(––)

Time

command

command

command

command

 

50

Page 62
Image 62
Omron CQM1H-SCB41 operation manual Setting a Transmission Delay