C500LK009V1 Omron, C500LK009V1 Datasheet - Page 99

• Manufacturer Part Number: C500LK009V1
• Description: PC LINK UNIT
• Manufacturer: Omron

Specifications of C500LK009V1

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

RECV(98) Instruction
Maximum Delay Time
NETWORK READ/WRITE Instructions
Example
RECV(98) executed
Reception processing
(command)
Note Be sure to take into account the time required for data links and program execu-
Transmission processing
(command)
Max. transmission delay
In this example, the maximum transmission delay is calculated for an instruction
sending 256 words of data in a system with 32 nodes. Network specifics are
detailed below:
The maximum transmission delay is thus:
The following indicates the data flow which will yield the maximum transfer inter-
val from the time the RECV(98) instruction is executed by the user program to
the time the SYSMAC LINK Unit stores the data in the local Unit’s memory area.
tion, which are not included in the following example.
Max. transmission delay = LINK Unit servicing interval (source node) +
Transmission processing (command) + Communications cycle + Reception
processing (command) + LINK Unit servicing interval (destination node) +
Transmission processing (response) + Communications cycle + Reception
processing (response) + LINK Unit servicing interval (source node).
SYSMAC LINK Unit servicing is performed once per PC scan.
LINK Unit servicing
Transmission processing
Communications cycle time
Reception processing
Transmission/reception
processing (command)
Transmission/reception
processing (response)
Communications
cycle time
Max. node number:
Number of nodes:
Number of polled units: 4
Number of words:
Communications:
Data link:
(PC scan time × 2) + 23.698 ms.
Delay cause
1
Delay cause
Coaxial
Optical
Transmission processing
(response)
32
32
256
coaxial cable
halted
5 ms
No. of words transferred × 0.013 ms + 5 ms
Max. node no. × 0.01 ms + no. of nodes × 0.075 ms
+ no. of polled units × 0.75 ms + 1.322 ms
Max. node no. × 0.01 ms + no. of nodes × 0.133 ms
+ no. of polled units × 0.75 ms + 1.322 ms
Data stored
Reception processing
(response)
PC scan time
8.328 ms
7.042 ms
8.328 ms
SYSMAC LINK Unit servicing
(source node)
Communications cycle
SYSMAC LINK Unit servicing
(destination node)
Delay (ms)
Maximum delay (ms)
Section 6-2
85