DCB Code Operated Switch

The DCB Access Switch is an ASCII character controlled switch used to connect one to six RS-232 async control devices to 4 to 152 async ports. Connection is made by entering the port number or port name. Disconnection is via entering a control code or lowering an RS-232 control lead. Either the port being controlled or the originating control port can lower a control lead to force a disconnect.

  • 4 to 152 Ports, 2 or more control ports
  • Control ports may be RS-232, internal modem, internal Ethernet (TCP/IP)
  • Up to 38,400 bps port speeds (19,200 bps on master-slave units)
  • Plain English prompts, user definable
  • Name or port number switching
  • Control lead or code disconnect
  • Connect to any other async devices
  • Optional 12, 24, 48,120VDC, 240VAC power supply
  • Password protected
  • Dial-through alarm/paging capability
  • Industrial Temp operation, -40 to +75 C
  • V.90 internal modem available on most models

The DCB Access Switch can be used to access any async device from a terminal or PC. The Access Switch is especially suited for accessing RTUs, modems, DSUs, multiplexers and hubs locally or via modems from a remote location.

The Access Switch is available in 4, 8, 16, 24, 32 and the expandable AS-24M version. Units with 32 or less output ports have two input (controlling) ports; larger ones have 6. The AS-24M is a 24 channel master unit with six input ports and 24 output ports. The AS-24M can be expanded by attaching up to four AS-32S slave units. The AS-32S increases the Access Switch to 56 ports, 88 ports, 120 ports or 152 ports.

The Access Switches have a minimum of two input ports allowing both local control and remote dial-in access. All input ports can be active at the same time. The user accessing the switch always gets positive feedback. Before connect and after disconnect, the Access Switch gives the user an “Access >>” prompt. Port switching requires no cryptic code entry. Ports can be accessed by name or by port number.

If the devices being accessed can be forced to lower an RS-232 control lead on command, as is the case with most modems, DSUs and multiplexers, disconnection can be via the hardware disconnect method. This makes the switch 100% data transparent, suitable for use between devices transferring binary data. Data transparency also insures that no control codes inadvertently cause a disconnect. Using hardware disconnect, a dial-in modem can be used for remote computer support and for accessing the communications equipment (DCB modems, DSUs and muxes or radios).

AS-04 – 4 port model
AS-08 – 8 port model
AS-16 – 16 port model
AS-24 – 4 port model
AS-32 – 32 port model
AS-24M – 4 port master
AS-32S 3- 2 port slaves for AS-24M

A solid alternative to the Electro Standards ESL PathWay Remotely Controllable RS232 Switches Models 4440 (4-Way) and Model 4480 (8-Way)