Xinje XD Series User Manual

301
3)Suitable soft components
Operands
Word soft elements
Bit soft elements
System
Consta
nt
Module
System
D
F
D
T
D
C
D
D
X
D
Y
D
M
D
S
K/H
I
D
Q
D
X
Y
M
S
T
C
Dn.
m
S1
●
●
●
S2
●
●
S3
●
●
D
●
●
●
●
●
●
●
*Note: D includes D, HD; TD includes TD, HTD; CD includes CD, HCD, HSCD, HSD;
DM includes DM, DHM; DS includes DS, DHS. M includes M, HM, SM; S includes S and
HS; T includes T and HT; C includes C and HC.
PID D0 D10 HD0 D100
X0
D·S1·
S2· S3·
PID D0 D10 HD0 Y0
X0
D·S1·
S2· S3·
 S3~ S3+ 69 will be occupied by this instruction, so please don’t use them as the common
data registers.
 This instruction executes when each sampling time interval comes.
 For the operation result, data registers are used to store PID output values; the output points
are used to output the occupy duty ratio in the form of ON/OFF.
 PID control rules are shown as below:
P: proportion, I: integral, D: differential
e(t) = r (t ) –c ( t ) (1-1)
u(t) = Kp [ e(t) + 1/Ti ∫ e(t)dt + TD de(t)/dt] (1-2)
Analog PID control system
Functions and Action
－
c(t)
u(t)
r(t) +
e(t)
+
+
+
P
Controlled
object
I
D
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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)