Omron SYSMAC CS1W-RPT01 Operation Manual page 291

Message Delay Times
RECV Instruction
Maximum Delay Time
RECV (193)/RECV(98)
executed
Link service processing (source node)
Transmission delay (command)
Reception processing (command)
266
Link servicing interval (source node)
Link service processing (source node)
Transmission processing
Communications cycle time (See note.)
Transmission delay
Reception processing
Link servicing interval (destination node)
Link service processing (destination node)
Total (max. transmission delay)
Note This communications cycle time is calculated assuming that there is no node
that transmits event frames before the SEND command is sent.
The data flow which will yield the maximum transfer interval from the time the
RECV(193)/RECV(98) instruction is executed by the user program to the time
the Controller Link Unit stores the data in the local Unit's memory area is
described below.
Note Be sure to take into account the time required for data links and program exe-
cution, which are not included in the following example.
Transmission processing (command)
Link service processing (destination node)
Maximum transmission delay
Max. transmission delay = Link servicing interval (source node) + Link service
processing (source node) + Transmission processing (command) + Communi-
cations cycle + Transmission delay (command) + Reception processing (com-
mand) + Link servicing interval (destination node) + Link service processing
(destination node) + Transmission processing (response) + Communications
cycle + Transmission delay (response) + Reception processing (response) +
Link servicing interval (source node) + Link service processing (source node).
Data stored
Reception processing (response)
Transmission delay (response)
Transmission processing (response)
Link service interval (destination mode)
Section 8-4
PLC cycle time (source node)
1 ms
0.00075 × 256 + 2 = 2.192 ≅
2.2 ms
600 × 4 + 110 × 32 + 320 × 0 + 4 ×
0 + 2,290 = 8,210 µs ≅ 8.2 ms
0.008 × 256 + 0.112 = 2.16 ≅
2.2 ms
0.00075 × 256 + 1.13 = 1.492 ≅
1.5 ms
As required by Programming
Device
1 ms
PLC cycle time (source node) +
Peripheral servicing interval
(destination node) + 16.1 ms
Link service processing (source node)
Link service interval (source node)
Communications cycle