Mitsubishi Electric MELSEC iQ-R02CPU - Timing Chart

APPX
Appendix 7 Processing Time
391
A
■Timing chart
This section describes a timing chart for each system switching cause.
• Communication error detection (alive check error)
• Communication error detection (ULP timeout occurrence)
• Disconnection detection
Tsi
Tsw
Ti Ti Ti
RJ71EN71 (system A)
Scan time of the system A CPU
System A
System B
Scan time of the system B CPU
RJ71EN71 (system B)
Operating as a control system
Communications have not been performed
with the external device for a fixed period.
Operating as a standby system
Control system Standby system
Standby system
Control system
Operating as a standby system
Operating as
a control system
Issuing a system
switching request
(Tr = 2)
System switching time
Ttu
Tsw
RJ71EN71 (system A)
Scan time of the system A CPU
System A
System B
Scan time of the system B CPU
RJ71EN71 (system B)
Operating as a control system
No response from the external device
Operating as a standby system
Issuing a system
switching request
Control system Standby system
Standby system Control system
Operating as a standby system
Operating as a control system
System switching time
Td
Tsw
RJ71EN71 (system A)
Scan time of the system A CPU
System A
System B
Scan time of the system B CPU
RJ71EN71 (system B)
Operating as a control system
Disconnected
Issuing a system
switching request
Control system Standby system
Standby system Control system
Operating as a standby system
Operating as a control system
Operating as a standby system
System switching time