Moeller PS 416-BGT-4 Series, Hardware And Engineering, Page: 136 / 150

Calculating reaction times
133
02/98 AWB 27-1208-GB
Appendix
Example
The following cards are located in the expansion
rack:
Table 22: Number of input/output bytes per card
With six expansion racks fitted with the above cards,
a program cycle time of 25 ms and a transfer rate of
375 Kbaud the reaction times (T
react
) are:
T
react(best)
= 2
҂
6 (1.42 + 0.048 (22+10)) + 1
҂
25 = 60 ms
T
react(worst)
= 4
҂
6 (1.42 + 0.048 (22+10)) + 2
҂
25 = 121 ms
Type Input byte Output byte
1
҂
416-INP-400 2 –
1
҂
416-OUT-400 – 2
1
҂
416-AIO-400 8 8
1
҂
416-CNT-200 12 –
Total 22 + 10 = 32
For Immediate Delivery call KMParts.com at (866) 595-9616