Use RS-232 - Current Loop Converters to connect a digital 20-mA Current Loop interface to the RS-232 port on your PC.
The converters can be configured for active or passive Current Loop. In active mode, an async RS-232 device can communicate with a passive 20-mA Current Loop device. In passive mode, an async RS-232 device can communicate with an active 20-mA Current-Loop device.
These compact solutions are configured as RS-232 (DCE), but they can be modified for DTE use with an asynchronous modem eliminator (ME212).
Each converter has a Transmit (T+ and T-) and a Receive (R+ and R-) loop. Optical isolators in both the transmit and receive loops keep out electrical interference and eliminate ground loops.
CL1090A-F
Operation —Active or passive unipolar 20-mA Current Loop
PS1003A-R2 (included in CL1090A-F-EU)
Power — From the interface or external wallmount power supply,
input: 100-240 VAC, 50-60 Hz, 0.03 Amp,
output: - 12 VDC, 500 mA ms, 6 watt,
includes interchangeable plugs for US, EU, UK, AU, CN
CL1090A-F:
(1) RS232 to CL Converter
CL1090A-F-EU
(1) RS232 to CL Converter
(1) Power supply (PS1003-R2) with interchangable plugs US, EU, UK, AU, CN
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