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6. OPERATING THE VARIOUS LADDER MONITOR SCREENS
6 - 16
MELSEC
GOT
6.2.2 Precaution during ladder monitoring
(1) When making connection to the FXCPU
(a) The comment display is kana comments only.
(b) During PLC read operation, the PLC read can only be performed for own
station only.
(c) STL (step ladder), the FXCPU exclusive instruction, is not a contact point, but
treated as an instruction and displayed in the following manner:
When monitoring with the peripheral device for FX
SET S21
SET S20
Y0000
X0000
X0000
S0
STL
SET S21
SET S20
Y0000
STL S0
X0000
X0000
When ladder monitoring with GOT
(d) When searching for STL instruction, search for "S (state)" in the device search.
(2) When making connection with the motion controller CPU
(a) When the OS version is "SV5**" in the SVST instruction, "J**" appears as the
tag name of MC.