Xinje XD Series User Manual

356
9 Sequence BLOCK
This chapter mainly introduces sequence block instruction and the application.
Sequence Block instruction:
Mnemonic
Function
Ladder chart
Chapter
Sequence Block
SBSTOP
Pause BLOCK
SBSTOP S1 S2
9-6-1
SBGOON
Go to execute
BLOCK
SBGOON S1 S2
9-6-1
9-1 Concept of the BLOCK
Sequence block whose brief name is BLOCK is a program block to realize some functions.
As a special flow, all instructions in the block are executed in order, which is the biggest
difference with general processes.
BLOCK starts from SBLOCK and ends with SBLOCKE, and programmers can write
instructions in the BLOCK. If one BLOCK contains multiple pulse output instructions(or
other instructions), then pulse output instructions will execute in accordance with conditions
meet order; And meanwhile the next pulse output instruction will not execute until the current
instruction is over.
The XD3, XDM series PLC supports multiple BLOCKs
※1
.
A complete BLOCK structure is shown as below:
BLOCK start
All instructions in
BLOCK is executed in
order
BLOCK end
Instruction
Pulse output
Read write module
G code
Wait instruction
Command list
SBLOCK n
SBLOCKE
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Xinje XD Series Specifications

General

Input Voltage	24V DC
Storage Temperature	-20°C to 70°C
Protection Class	IP20
Type	PLC
Series	XD
Programming Language	Ladder Logic, Instruction List
Communication Interface	RS232, RS485
Power Supply	24V DC
Digital Inputs	Available (number varies by model)
Digital Outputs	Available (number varies by model)
Analog Inputs	Available (number varies by model)
Analog Outputs	Available (number varies by model)
Output Type	Relay, Transistor
Number of Inputs	Varies by model (see Digital Inputs and Analog Inputs)
Number of Outputs	Varies by model (see Digital Outputs and Analog Outputs)
Operating Temperature	0°C to 50°C
Humidity	5% to 95% (non-condensing)