2
ANALOG INPUT MODULE REPLACEMENT
2.4 A68AD (Upgrade to Q68AD-G)
2.4.1 Performance comparison
Item
Voltage
Analog input
Current
Digital output
I/O characteristics
Maximum resolution
Overall accuracy (Accuracy in
respect to maximum digital
output value)
Maximum conversion speed
Response time
Absolute maximum input
2
- 19
(Input resistance value: Hardware version K or later: 1M, Hardware version J or earlier: 30k)
+4 to +20mADC (Input resistance value: 250)
*Usable current input: -20 to 0 to +20mA
16-bit signed binary (-2048 to +2047)
+5V or +20mA
A68AD
-10 to 0 to +10VDC
Analog input
Digital output
+10V
+2000
+1000
0V or +4mA
±0
-5V or -12mA
-1000
-10V
-2000
Voltage: 5mV (1/2000)
Current: 20µA (1/1000)
±1% (±20)
Max. 2.5ms/channel
-
Voltage: ±15V
current: ±30mA