Omron CS1W-CRM21 - Page 162

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Remote I/O Communications Performance Section 5-3
Maximum I/O Response Time
Word Slave Units
■ Formula for the Maximum I/O Response Time for a Word Slave Unit
TIN: Input Slave Unit input delay time
TNetCyc: Communications cycle time
TNetCycInt: Interrupt processing time
TCrmInMax: Maximum input processing time at Master Unit
Tcyc: CPU Unit cycle time
TCrmOutMax: Maximum output processing time at Master Unit
TNetOut: Time allotted for output frames in communications cycle time
TOUT: Output Slave Unit output delay time
• Input Slave Unit input delay time
For details on delay times for individual Slave Units, refer to the input
specifications for individual Slave Units in the CompoNet Slave Unit Oper-
ation Manual (Cat. No. W457).
• TNetCyc: Communications Cycle Time
Tcyc Tcyc
CPU Unit processing
Master Unit processing
Communications cycle
Slave Unit processing
Maximum I/O response time
TIN
TNetCyc
TNetCyc
TNetCyc
0.1 ms
TNetCycInt
TCrmInMax
TCrmOutMax
TNetCyc
TNetCyc
TNetOut
TOUT
TIN + TNetCyc×2 + 0.1ms + TNetCycInt + TCrmInMax + Tcyc×2 + TCrmOutMax +
TNetOut
+
TOUT
Baud rate
Communications mode
Maximum I/O 4.0 Mbit/s 3.0 Mbit/s 1.5 Mbit/s 93.75 kbit/s
Communications mode 0 128 input words, 128 output words 0.9 ms
(0.7 ms)
0.9 ms
(0.7 ms)
1.5 ms
(1.1 ms)
19.8 ms
(12.5 ms)
Communications mode 1 256 input words, 256 output words 1.0 ms
(0.8 ms)
1.2 ms
(1.0 ms)
2.3 ms
(1.9 ms)
30.2 ms
(22.8 ms)
Communications mode 2 512 input words, 512 output words 1.3 ms
(1.0 ms)
1.7 ms
(1.5 ms)
4.0 ms
(3.5 ms)
51.3 ms
(44.0 ms)