Campbell CR800 Series, Operator'S Manual

Page: 59 / 598

Section 5. Overview
59
Digital I/O
Control
   
4
Status
   
4
General I/O (TX,RX)
 
2
Pulse-width modulation

1
Timer I/O
   
4
Interrupt
   
4
Continuous Regulated
3
5 Vdc

1
Continuous Unregulated
3
12 Vdc

1
Switched Regulated
3
5 Vdc
   
4
Switched Unregulated
3
12 Vdc

1
UART
True RS-232 (TX/RX)


4
2
TTL RS-232 (TX/RX)
 
2
SDI-12
 
4
SDM (Data/Clock/Enable)

1
1
Terminal expansion modules are available. See section
Measurement and Control Peripherals —
Overview
(p. 82).
2
Static, time domain measurement. Obsolete. See section Vibrating Wire Measurements — Overview
(p.
73).
3
Check the table Current Source and Sink Limits
(p. 389).
4
Requires an interfacing device for sensor input. See section Data Retrieval and Comms Peripherals —
Lists
(p. 568).
5.1.1.1 Switched Voltage Output — Overview
Related Topics:
• Switched Voltage Output — Specifications
• Switched Voltage Output — Overview
(p. 59)
•
Switched Voltage Output — Details
(p. 388)
•
Current Source and Sink Limits
(p. 389)
•
PLC Control — Overview
(p. 87)
• PLC Control Modules — Overview
(p. 394)
•
PLC Control Modules — Lists
(p. 565)
C terminals are selectable as binary inputs, control outputs, or communication
ports. See Measurements — Overview
(p. 64)
for a summary of measurement
functions. Other functions include device-driven interrupts, asynchronous