Table of Contents
RS-ADIN4, RS-HADIN4 Analog Input Module
The AD Input Modules can be wired to read voltage sources or current sources. When reading voltages sources, the modules can be configured for a 0 ~ 10V range or a 1 ~ 5V range using the dipswitch on the side of the module. When reading a current source (4-20mA), connect a 250ohm resister across the input terminals.
| Module Name | Output Value | Resolution | Precision | Conversion Speed |
|---|---|---|---|---|
| RS-ADIN4 | 0 ~ 10,000 | 13.3-bit | +/-0.1% | 30ms per channel |
| RS-HADIN4 | 0 ~ 100,000 | 16.6-bit | +/-0.1% | 240ms per channel |
The input voltage range can be adjusted using dipswitch #2. Dipswitch #1 is not used.
| Dipswitch #2 ON | 0 ~ 10V |
| Dipswitch #2 OFF | 1 ~ 5V |
| RS-ADIN4, RS-HADIN4 Specifications | |
|---|---|
| Operating Temperature | -10 ~ 50 oC (no condensation) |
| Operating Humidity | 35 ~ 85%RH |
| Input Resistance | 590Kohm |
| Input Voltage Range | 1~5V mode: 0.5 ~ 5.5V (Damage may occur if used in excess of this range) |
| 0~10V mode: -0.5 ~ 10.5V (Damage may occur if used in excess of this range) | |
| Communication Method | RS-485 |
| Packet Transmission | 3ms |
| Isolation Method | No Isolation |
AD Input Module's Sampling Frequency
The RS-ADIN4's sampling frequency is 30ms per channel, so sampling all 4 channels will take 120ms. Therefore, it is unnecessary to perform call getAdc faster than 120ms, as it will always return the same value.
The getAdc function call takes approximately 3ms.
The RS-HADIN4's sampling frequency is 240ms per channel, so sampling all 4 channels will take approximately 960ms. Therefore, it is also unnecessary to call getHadc at a rate greater than 960ms, as it too will always return the same value.
When the system is first powered on, all four channels are scanned once. Calling getAdc or getHadc at this time will return an invalid value. When using the RS-ADIN4 module, please allow at least 120 ms from the time the system is powered on before calling getAdc. Similarly, when using the RS-HADIN4 module, please allow at least 960ms from the time the system is powered on before calling getHadc.
Installing AIO Modules
The AIO (Analog Input & Output) modules can be installed in any slot on either the 10-slot main board or the 5-slot expansion board, except the CPU slot.
