Sharp JW-20CM User Manual page 111

(2) Communication delay time
The communication data on the satellite net may have the delay shown below.
O N
①
I / O
;; ;;
PC00
JW-20CM
Operation cycle
;; ;;
JW-20CM
P C 0 1
I / O
① Delay of input module
② Time required for PC to detect input state (one operation cycle max.)
③ Operation time of sending PC (one operation cycle)
④ Time to complete sending of operation result (one communication cycle max.)
⑤ Time required for receiving PC to write receive data in PC data memory
(one operation cycle max.)
⑥ Operation time of receiving PC (one operation cycle)
⑦ Delay of output module
Communication delay time is the total time of ① to ⑦ above.
Remarks
The buffer memory contents of the JW-20CM is renewed for each PC operation cycle.
Therefore, a contact point which turns "ON" for only one operation cycle of a PC may not be
transferred.
PC00
②
;; ;; ;; ;;
③
④
(Communication)
;; ;; ;; ;;
9 13
·
PC01
;; ;; ;; ;;
;; ;; ;; ;;
⑤
⑥
⑦
;;;
;;;
ON
9