Link Special Relay (Sb); Edge Relay (V) - Mitsubishi Electric L02SCPU User's Manual And Reference

5.2.7

Link special relay (SB)

The link special relay (SB) is a relay that indicates communication status and error detection status of the CC-Link IE
Field Network master/local module or the CC-Link system master/local module. The relay is turned on or off according
to various factors that occur during data link. Status of the data link can be confirmed by monitoring the link special
relay.
Manuals for each network module
5.2.8

Edge relay (V)

The edge relay (V) is a device in which the on/off information from the beginning of the ladder block. The EGP/EGF
instructions only can be used. The edge relay of the same number cannot be set.
Ex.
Detecting a leading edge and execute it in the program configured using index modification
[Program example]
*1 The on/off information for X0Z1 is stored in the V0Z1 edge relay. For example, the on/off information of X0 is stored in
V0, and that of X1 is stored in V1.
[Timing chart]
When Z1 = 0
When Z1 = 1
298
*1 *1
ON
X0
OFF
ON
V0 OFF
ON
M0 OFF
1 scan
X1 OFF
OFF
V1
M1 OFF
Stores on/off information of X0, X1, and X10.
Clears index register (Z1).
Specifies the number of repeats
(10 times).
Turns on M0Z1 for 1 scan, followed
by rise of X0Z1.
Increments (+1) index register (Z1).
Returns to FOR instruction.
Turns on for 1 scan by rise of X0.
ON
ON
Turns on for 1 scan by rise of X1.
ON
1 scan