YOKOGAWA F3LR02-0N, User Manual

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B4-5
IM 34M06H45-01E 7th Edition : Aug.30, 2019-00
B4.2.3 Enabling/Disabling Shutdown Output on
Transmission Channel Error Function
This switch is used to specify whether to shutdown the output of the I/O modules in a
subunit in the event of a transmission channel error (cable discontinuity, subunit power
off, etc.). Set operations for individual I/O modules to Hold or Reset using WideField3 or
CONTROL statements in BASIC programs.
For details
on the Shutdown Output function, see Section B6, “RAS Functions of
Fiber-optic FA-bus Type 2
”.
Setting Description
OFF
Hold output in the event of a transmission channel error
(Continue operation if a transmission channel is secured and system
operation is continued).
ON Shutdown output in the event of a transmission channel error
The Shutdown Output on Transmission Channel Error function is valid only for
configurations with one CPU module (i.e. not a multi-CPU configuration).
Note
If the module has its Shutdown Output function (Condition Switch No. 1) set to ON, it treats a
transmission channel error due to, say, a broken fiber-optic cable or a powered-off main unit or a
powered-off intermediate substation as a major failure of the sequence CPU module. Thus, if a
transmission channel error occurs with Condition Switch No. 1 set to ON, the output is either shut down
or held according to the DIO Setup ("Reset" or "Hold") of the CPU configuration.
Note
- The Shutdown Output on Transmission Channel Error is invalid for a main unit and
should be turned off for the main unit.
- Turn off this function for a loop configuration. If it is on, output will be shutdown in
the event of a cable discontinuity even if loop switching is activated to maintain
transmission.
- When using F3SP05, F3SP08, F3SP21, F3SP25 and F3SP35 CPU modules (Rev.
8 or later), this function is only available for output modules with 32 outputs or less.
- When using CPU modules F3SP22, F3SP 28, F3SP38, F3SP53, F3SP58, F3SP59,
F3SP66, F3SP67, F3SP71 or F3SP76, this function is available for output modules
with 32 outputs or less, as well as F3YD64-1F, F3WD64-3F, F3WD64-4F, and
F3YD64-1P.
B4.2.4 Setting the Number of Ports
This switch is used to specify the ports to be used on a Fiber-optic FA-bus Type 2
module.
Value Ports Used
OFF Port 1
ON Port 1 and Port 2
Note
- When the number of ports is set to 1, use port 1.
- If a port is not used, attach it with the dust cap (accessory).
- Turn on this setting when using a loop configuration.