FX1S-30MR-ES/UL MITSUBISHI, FX1S-30MR-ES/UL Datasheet - Page 57

• Manufacturer Part Number: FX1S-30MR-ES/UL
• Description: PLC, 16 IN, 14 RELAY OUT, 110V/2
• Manufacturer: MITSUBISHI

Specifications of FX1S-30MR-ES/UL

• No. Of Analogue Inputs: 16
• No. Of Analogue Outputs: 14
• Ip/nema Rating: IP10
• Approval Bodies: CE, CUL, UL
• External Depth: 49mm
• External Length / Height: 90mm
• External Width: 60mm
• Mounting Type: Panel

3.4
3.4.1
FX Series Programmable Controllers
Moving Between STL Steps
To activate an STL step the user must first drive the state coil. Setting the coil has already
been identified as a way to start an STL program, i.e. drive an initial state. It was also noted
that using an OUT statement to driving a state coil has a different meaning to the SET
instruction. These difference will now be explained:
Using SET to drive an STL coil
• SET is used to drive an STL state coil to make the step active. Once the current STL step
Note: If a user wishes to forcibly reset an
40) instructions would perform this task.
STL step, using the RST or ZRST (FNC
activates a second following step, the source STL coil is reset. Hence, although SET is
used to activate a state the resetting is automatic.
However, if an STL state is driven by a
series of standard ladder logic instructions,
i .e . n o t a p r e c e d i n g S T L s ta t e , t h e n
standard programming rules apply.
In the example shown opposite S20 is not
reset even after S30 or S21 have been
driven. In addition, if S20 is turned OFF,
S 3 0 w ill a ls o st o p o pe r a tin g . T h is is
because S20 has not been used as an STL
state. The first instruction involving the
status of S20 is a standard LoaD instruction and NOT an STL instruction.
• SET is used to drive an immediately following STL step which typically will have a larger
• SET is used to drive STL states which occur within the enclosed STL program flow, i.e.
STL state number than the current step.
SET is not used to activate a state which appears in an unconnected, second STL flow
diagram.
X000
S020
X000
S040
ZRST S21 S28
STL Programming 3
SET S021
RST S022
3-5
S020
S030