Product Description
Communication speed: 300-115.2 KBd. Maximum connection distance: Up to 3,000 ft. (more with repeater). Cable specifications for RS-232 or RS-485/422: #24 gauge, 7x32 stranded, 100-ohm nominal impedance, 12.5 p/F/ft.. Connector, Manufacturer: Plug, 7-position screw terminal, Phoenix Contact, P/N: MC1 5/7-ST-3, 81. Port configuration: COM2, RS-232 or RS-485/422 RS-232: TX, RX, RTS, CTS, DTR (+V), +5V, GND / COM3, RS-232 or RS-485/422 RS-485: 2-wire, half-duplex; RS-422: 4-wire, half- or full-duplex. The M4SSER expands the number of serial ports on the M4 Modular Controllers from two to four. Intrinsically, the M4’s UART can support four communication ports. However, the M4 base unit provides connections for only two ports (COM0 and COM1). The M4SSER allows the user to take advantage of the two remaining ports (COM2 and COM3). The M4SSER can be used with any of Opto 22’s M4 Modular Controllers except the SNAP-LCM4. The two M4SSER ports are configurable as either RS-232 or RS-485/422 ports. They support communication speeds of up to 115.2 KBd, are modem-compatible, and support both ASCII and binary (Mistic) protocols. They may be used to link a host PC to the M4 Modular Controller, provide multiple host ports, network M4s or other Opto 22 controllers, connect additional I/O, or interface to application-specific third-party hardware. Configured for RS-232, each port can also supply +5 VDC for powering devices with low current demands, such as barcode readers. This allows connection to a variety of application-specific devices requiring RS-232 capability. Configured for RS-485/422, each port can be used for a remote serial I/O link, expanding the potential M4 base unit I/O from 4,096 channels to 12,288 channels. With the help of Opto 22 I/O units and AC38 repeaters, the M4SSER can allow a user to develop a robust distributed control system using M4 Modular Controllers. This configuration also allows connection to a variety of application-specific devices requiring RS-485/422 capability â€" such as a host port network of M4 Modular Controllers, multiple serial I/O links, and intelligent electronic devices. The two M4SSER ports can be configured for either full-duplex (4-wire) or half-duplex (2-wire), terminated, or not terminated operation. Both ports are configurable and addressable through OptoControl or Cyrano.. Opto 22. Opto 22. M4SSER.