Minimum Transmission Delay Time For Send/Recv Instructions - Omron SYSMAC C200HW-PCU01 Operation Manual

Minimum Transmission Delay Time for SEND/RECV Instructions

Control Data Settings
8-4 Minimum Transmission Delay Time for SEND/RECV
Instructions
Response monitoring time:
Specify the response wait time when the response request bit is set to 0
(response required). Specify the time in hexadecimal (0 to FF).
Unit address of source node:
The address is fixed at $00
Source node address:
Specify the node address of the source node in hexadecimal (1 to 7E).
The table below shows the range of values that can be set for each item.
Item
Number of words transferred
Operating level
Response request bit
Indirect addressing bit for beginning
source word
No. of retries
Response monitoring time
Unit address of source node
Source node address
The minimum transmission delay time for SEND/RECV instructions is as illus-
trated below.
SEND/RECV
Instruction executed
Minimum transmission
delay time
Transmission
processing
(command)
Reception pro-
cessing (com-
mand)
The Ethernet communications cycle time differs according to system configura-
tion and load, so in this instance the communications cycle time is calculated as
0.
Minimum transmission delay time
= service link interval (local node) + transmission processing (command)
+ communications cycle + reception processing (command)
+ service link interval (remote node) + transmission processing (response)
+ communications cycle + reception processing (response)
+ service link interval (local node).
• Service Link Interval
One cycle time for the C200HX/HG/HE CPU
$0000 to $03E8 (0 to 1000word)
0 (OFF): level #1
1 (ON): level #0
0 (OFF): Response required
0 (OFF): Direct addressing
1 (ON): Indirect addressing
$0 to $F (0 to 15)
$00: Default (2.2 seconds)
$01 to $FF (approx. 0.1 to 25.5 seconds in
100 ms increments)
$00: PC
$01 to $7E: Source node address
(1 to 127)
Data set
Reception processing
(response)
Transmission processing
(response)
Section 8-4
Setting
Service link interval
(local node)
Communications cycle
(not fixed)
Service link interval
(remote node)
113