Hach sc200 - RS232 to RS422;RS485 Isolated Universal Converter

RS232 to RS422/RS485 Isolated
Universal Converter
• The M90-19-R4 converts serial data from the RS232 standard to
RS485.
Features
• Universal converter:
• must be used with the ModCon75 Controller
• automatically senses the direction of the data flow, and
switches the transmission direction
• comes in a standard-sized housing, snap-mounts onto a 35
mm DIN rail
• screw terminal block connections are provided
• RJ11 connector provides easy plug-in connection for the
ModCon75 Controller
• supports networks containing up to 25 nodes
• enables full or half-duplex communications
• uses a stand-alone power supply
• has LED indicators.
Figure 2-5. Function Diagram
2-5