Chapter 7. Usage of Various Functions
7-48
Conversion method is as below.
Scaling conversion value (A/D conversion =
3200
4000]
800]
20mA)
~
0
of
[(data
×
−
Example) 8mA input in the range of 0 ~ 20
㎃
- Before the scaling conversion : 8
㎃
/ 5
㎂
= 1600
- After the scaling conversion: (1600 –800) x 1.25 = 1000
Scaling conversion value (D/A conversion) =
800
4000
3200]
20mA)
~
0
of
[(data
+
×
Example) Output 1000 in the range of 0 ~ 20
㎃
- Current output value before the scaling conversion : 1000 x 5
㎂
= 5
㎃
- Current output value after the scaling conversion: (1000 x 0.8) + 800 = 1600
1600 x 5
㎂
= 8
㎃
4) Wiring
(1) Caution for wiring
•
Make sure that external input signal of the mixture module of AC and analog I/O is not affected by induction noise or
occurs from the AC through using another cable.
•
Wire is adopted with consideration about peripheral temperature and electric current allowance. For wire, thicker than
AWG22 (0.3
㎟
) one is recommended.
•
If wire is put near to high temperature radiated device or contacted with oil for a long time, it may cause of electric
leakage so that it gets broken or miss-operation during wiring.
•
Be sure to connect with care of polarity while connecting to external 24V DC power supply.
•
In case of wiring with high voltage line or generation line, it makes induction failure so then it may cause of miss-
operation and out of order.
(2) Wiring example
a) Analog input
Input
+
-
+
-
Input
Voltage input
Current input
V0
I0
COM0
V1
I1
COM1
Terminal
*1
*1
Terminal
Summary of Contents for GLOFA G7M-DR20U
Page 28: ...Chapter 4 Names of Parts 4 3 2 G7M DRT60U N 3 G7M DT60U N 4 G7M DT60U P...
Page 29: ...Chapter 4 Names of Parts 4 4 5 G7M DR60U DC 6 G7M DRT60U N DC 7 G7M DT60U N DC...
Page 31: ...Chapter 4 Names of Parts 4 6 3 G7M DT40U N 4 G7M DT40U P 5 G7M DR40U DC...
Page 32: ...Chapter 4 Names of Parts 4 7 6 G7M DRT40U N DC 7 G7M DT40U N DC 8 G7M DT40U P DC...
Page 33: ...Chapter 4 Names of Parts 4 8 4 1 3 30 point main unit 1 G7M DR30U 2 G7M DRT30U N 3 G7M DT30U N...
Page 34: ...Chapter 4 Names of Parts 4 9 4 G7M DT30U P 5 G7M DR30U DC 6 G7M DRT30U N DC...
Page 36: ...Chapter 4 Names of Parts 4 11 2 G7M DRT20U N 3 G7M DT20U N 4 G7M DT20U P...
Page 37: ...Chapter 4 Names of Parts 4 12 5 G7M DR20U DC 6 G7M DRT20U N DC 7 G7M DT20U N DC...
Page 38: ...Chapter 4 Names of Parts 4 13 8 G7M DT20U P DC...
Page 159: ...Chapter 7 Usage of Various Functions 7 52 c Program...
Page 183: ...Chapter 7 Usage of Various Functions 7 76 c Program...
Page 253: ...Chapter 8 Communication Functions 8 27 b When uses Ch 1 Built in RS 485...
Page 356: ...Appendix 1 System Definitions App1 9 6 Position Parameter...
Page 357: ...Appendix 1 System Definitions App1 10 7 High Speed Counter Parameter...