RS232 & RS485 Options
Features
- Allows meter or counter to:
- Output latest value, peak value and alarm status to a computer, PLC or remote Micro display.
- Serve as a remote display to a computer, PLC or other Micro.
- Be set up via computer using PC-compatible application software (furnished).
- Data rates selectable from 300 to 19,200 bps.
- Powered by meter or counter.
- Isolated from meter and power grounds.
- RS485 version allows up to 31 meters or counters to be multidropped on same data line.
Description
Micro™ DPMs and counters offer RS232 or RS485 communication boards to interface with computers, PLCs or other digital devices, including the Micro 6-digit remote display. Both boards are connected via phone jacks using standard 4- or 6-conductor phone cables. With either board, Electro-Numerics provides Windows-compatible software which allows device setup via a computer monitor.
With DPMs and counters, the information transmitted via RS232 or RS485 includes the latest signal value (filtered or unfiltered), peak signal value, alarm values and status. By using a serial interface board, a Micro counter can be used as a remote display to an external device or to another Micro.
RS232 Board
Micro™ DPMs and counters offer RS232 or RS485 communication boards to interface with computers, PLCs or other digital devices, including the Micro 6-digit remote display. Both boards are connected via phone jacks using standard 4- or 6-conductor phone cables. With either board, Electro-Numerics provides Windows-compatible software which allows device setup via a computer monitor.
With DPMs and counters, the information transmitted via RS232 or RS485 includes the latest signal value (filtered or unfiltered), peak signal value, alarm values and status. By using a serial interface board, a Micro counter can be used as a remote display to an external device or to another Micro.
Point-to-Point Communications with RS232
RS485 Board
The RS232 option allows a Micro meter or counter to be programmed by a computer, to output data to a computer, or to drive a panel-mount printer, remote display, or other digital device with an RS232 interface. There can normally only be one meter or counter per RS232 line. However, multiple remote displays can be connected to a single RS232 line in multidrop fashion.
The RS232 request-to-send line (RTS) can be set to a latched mode, where a single reading is transmitted when the line is taken high. This mode allows a single data transfer to be commanded by a device other than a computer.
Point-to-Point Communications with RS232
Specifications
| RS232 Mode | Full duplex |
| RS485 Modes | Full and half duplex |
| Data Rates | 300, 600, 1200, 2400, 4800, 9600, 19200 bps |
| Signal Levels | Compliant with RS232 or RS485 standards |
| Data format | No parity, 8 data bits, 1 stop bit |
| ESD Protection | 15 kV per IEC 1000-4-2 |
| EMI Immunity | 10 V/m per IEC 1000-4-3 |
| EFT Protection | 2 kV per IEC 1000-4-4 |
| Short Circuit Protection | Continuous |