KD Scientific Gemini 88 - Manual (Page 18)

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KDS Gemini 88
Figure 9. External Interface
External devices that can be attached to the Pump 33 include external valves, pump chain,
and TTL devices. See the appropriate appendixes for specification details on attaching
devices.
ATTACHING A PUMP CHAIN
On the back of the pump are two telephone jack type connectors. These are the RS-232
ports. Looking at the back of the pump, the connector on the right is port 1 and the left is
port 2. Attach the RS-232 connectors in the appropriate port according to the following
chart:
Device Port Number
Computer 1
Pump Chain 2
CONFIGURING THE PUMP CHAIN
After pressing SET and 1, the Remote LED will blink, indicating the pump is requesting its
pump chain configuration:
1) First, the display will show “Adr:nn”, with the colon blinking, where “nn” is the
current pump chain address. Enter the 2 digit address assigned to the pump and
press ENTER. Note: Each pump in the chain needs a unique address.
2) Next, the display will show “b:nnnn”, with the colon blinking, where “nnnn” is the
current baud rate. Use the 1 key to select between the supported baud rates:
300, 1200, 2400 and 9600; then press ENTER. Note: Each pump in the chain
must have the same baud rate.
See the section on Pump Chain Commands for pump chain control information.
ATTACHING A VALVE CONTROL ACCESSORY BOX
Attach the valve control cable to the pump’s accessory valve connection (see Figure 9).
Refer to the Valve Control Box section.
External Control and Interfaces