Wiring panel and terminal functions
The CR1000X wiring panel provides ports and removable terminals Point at which a wire (or wires) connects to a wiring panel or connector. Wires are usually secured in terminals by screw- or lever-and-spring actuated gates with small screw- or spring-loaded clamps. for connecting sensors, power, and communications devices. It is protected against surge, over-voltage, over-current, and reverse power. The wiring panel is the interface to most data logger functions so studying it is a good way to get acquainted with the data logger. Functions of the terminals are broken down into the following categories:
- Analog input
- Pulse counting
- Analog output
- Communications
- Digital I/O
- Power input
- Power output
- Power ground
- Signal ground
Analog input terminal functions |
||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SE DIFF |
1 2 ┌1┐ H L |
3 4 ┌2┐ H L |
5 6 ┌3┐ H L |
7 8 ┌4┐ H L |
9 10 ┌5┐ H L |
11 12 ┌6┐ H L |
13 14 ┌7┐ H L |
15 16 ┌8┐ H L |
RG1 | RG2 | ||||||||
Single-Ended Voltage | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||
Differential Voltage | H | L | H | L | H | L | H | L | H | L | H | L | H | L | H | L | ||
Ratiometric/Bridge | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||
Thermocouple | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||
Current Loop | ✓ | ✓ | ||||||||||||||||
Period Average |
✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Pulse counting terminal functions |
|||
---|---|---|---|
P1 | P2 | C1-C8 | |
Switch-Closure | ✓ | ✓ | ✓ |
High Frequency | ✓ | ✓ | ✓ |
Low-level AC | ✓ | ✓ |
Conflicts can occur when a control port pair is used for different instructions (TimerInput()
, PulseCount()
, SDI12Recorder()
, WaitDigTrig()
). For example, if C1 is used for SDI12Recorder()
, C2 cannot be used for TimerInput()
, PulseCount()
, or WaitDigTrig()
.
Analog output terminal functions |
|
---|---|
VX1-VX4 | |
Switched Voltage Excitation | ✓ |
Voltage Output |
||||||
---|---|---|---|---|---|---|
C1-C81 | VX1-VX4 | 5V | 12V | SW12-1 | SW12-2 | |
5 VDC | ✓ | ✓ | ✓ | |||
3.3 VDC | ✓ | ✓ | ||||
12 VDC | ✓ | ✓ | ✓ | |||
C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | RS-232/CPI | |
---|---|---|---|---|---|---|---|---|---|
SDI-12 | ✓ | ✓ | ✓ | ✓ | |||||
GPS | PPS | Rx | Tx | Rx | Tx | Rx | Tx | Rx | |
TTL 0-5 V | Tx | Rx | Tx | Rx | Tx | Rx | Tx | Rx | |
LVTTL 0-3.3 V | Tx | Rx | Tx | Rx | Tx | Rx | Tx | Rx | |
RS-232 | Tx | Rx | Tx | Rx | ✓ | ||||
RS-485 (Half Duplex) | A- | B+ | A- | B+ | |||||
RS-485 (Full Duplex) | Tx- | Tx+ | Rx- | Rx+ | |||||
I2C | SCL | SDA | SCL | SDA | SCL | SDA | SCL | SDA | |
SPI | SCLK | COPI | CIPO | SCLK | COPI | CIPO | |||
SDM1 | Data | Clk | Enabl | Data | Clk | Enabl | |||
CPI/CDM | ✓ | ||||||||
Digital I/O terminal functions |
|
---|---|
C1-C8 | |
General I/O | ✓ |
Pulse-Width Modulation Output | ✓ |
Timer Input | ✓ |
Interrupt | ✓ |
Quadrature | ✓ |