Appendices; Appendix 1 Comparison Of A68Adn And A68Ad/A68Ad-S2/A616Ad Functions - Mitsubishi Electric MELSEC A Series Manual

APPENDICES

APPENDICES

APPENDIX 1 Comparison of A68ADN and A68AD/A68AD-S2/A616AD Functions

Item
Voltage
Analog
input
Current
ACPU
Digital output
K2ACPU
Voltage
Maximum
resolution
Current
Overall accuracy
Maximum conversion speed
Absolute Voltage
maximum
Current
input
Number of analog input
device points
Conversion method
Offset/gain adjustment
Average processing
Between input
terminal an
Insulation
PC CPU
method
Between
channels
Specification of A-D
conversion channel
A-D conversion-completion
flag
Table A1 Function Comparison
A68AD A68AD-S2
–10 to 0 to 10 VDC
(input resistance 30 KΩ)
16-bit signed binary
(–2048 to 2047)
16-bit signed binary
(±2047)
5 mV (1/2000)
20 µA (1/1000)
Within ±1 %
Max. 2.5 ms/channel
8 channels/module
Use offset/gain adjustment
knobs
Enabled
Set serial channel numbers
beginning with CH 1
Not provided
Specifications
A616AD
–10 to 0 to 10 VDC
(input resistance 1 MΩ)
–20 to 20 mADC (input resistance 250 W)
16-bit signed binary
–48 to 4047,
–2048 to 2047
1.0 mV (1 to 5 V),
1.25 mV (0 to 5 V),
(1/
2.5 mV
4000)
(0 to 10 V), 5.0 mV
(-10 to 10 V)
10 µA (0 to 20
mA), (1/
20 µ A (-20 to 20
2000)
mA)
4 µA (4 to 20 mA),
5 µA (0 to 20 mA),
(1/
10 µA (-20 to 20
4000)
mA)
Within ±0.6 %
1 ms/channel
±15 V
±30 mA
16 channels/modul
(extendable)
Scannings per channel
Switched with a setting pin
Disabled
Photocoupler insulation
No insulation
A-D conversion-enabled/disabled setting
When A-D conversion is specified, after A-D conversion is completed,
and the digital value is written to buffer memory, the A-D conversion-
completion flag is set
APP − 1
MELSEC-A
A68ADN
16-bit signed binary
–4096 to 4095,
–8192 to 8191,
–12288 to 12287
(Unavailable)
2.5 mV (1/4000)
Selected
with a
1.25 mV (1/8000)
setting
pin
0.83 mV (1/12000)
10 µA
(1/4000)
Selected
with a
5 µA
(1/8000)
setting
pin
3.3 µA
(1/12000)
Within ±1 %
20 ms/channel
8 channels/module
Use offset/gain adjustment
knobs
Enabled
Selectable
Selectable