Range of Input Setup (Address "20, 21")
Buffer Memory Address "20","21"
These are used to set up the range of inputs by channels for an A/D converter module.
To make the setup available, requesting to set up operation condition(Y02) is to be set and reset.
The set values of the channels from 1 to 4 are stored in Buffer Memory Address "20" and the set values of the channels from 5 to 8 are stored in Buffer Memory Address "21".
In case of 4-channel module, Buffer Memory Address "21" is disregarded.
The range of the default values for AD04VI, AD08I is from 4 to 20(mA) and the range for AD08V is from 1 to 5V.
As a set value is stored in EEPROM, the A/D module is operated as previously set value even though the power is on and off.
The set values are as follows.
Range of Input | Set Value |
4 ~ 20(mA) | 0 |
0 ~ 20(mA) | 1 |
1 ~ 5(V) | 2 |
0 ~`5(V) | 3 |
-10 ~ 10(V) | 4 |
0 ~ 10(V) | 5 |