21
333/334 HPLC PUMPS | USER’S GUIDE
ELECTRICAL CONNECTIONS
GSIOC ID
You must use the default values for a system where a 333 Pump is controlling other devices. By
default, the controlling pump is assigned ID #1, the connected pumps are assigned IDs #2, and
ID #3. If an injection pump is connected, use ID #4.
To change the GSIOC ID for the 333 Pump (0–63):
1. Switch on the pump and wait until it has initialized.
2. Press Edit > Config > Misc.
3. Key in the desired ID for the 333 Pump.
4. Press ENTER.
The GSIOC ID may be changed when the pump is being controlled
from a computer. The configured ID on the pump must correspond
to those set in the controlling software.
The GSIOC identification number (ID) that you set must be unique
for each item of Gilson equipment.
The GSIOC ID (0–9) is set mechanically for the 334 Pump using the
SW1 (left) selector on the rear panel.
BAUD RATE
You must use the default values when the 333 Pump is controlling other devices. When a
334 Pump is controlled by a 333 Pump, the baud rate must be set to 0 (External). Baud rates
can also be changed to match the values of other sending and receiving devices.
For a 333 Pump, the baud rate is set as follows:
1. Switch on the pump and wait until it has initialized.
2. Press Edit > Config > Misc.
3. Press the Down arrow key.
4. Press Change until you see the desired baud rate (1200, 2400,
4800, 9600, 19200, or External)
The baud rate (9600, 19200, or External) is set mechanically for
the 334 Pump using the SW2 (right) selector on the rear panel.
External clock control should be selected for all pumps running
under computer control. Internal is used when the connected
device does not provide a clock source, in which case you have to
select an appropriate baud rate.
VOLTAGE SELECTION
The pump can be connected to an AC power supply of 110/120V or 220/240V. Automatic
selection of the operating voltage takes place on the power supply board.
POWER CONNECTION
Plug the power supply cord that you received with the pump into the socket on the power
receptacle (standard 3-pin connector) and to a suitable source of power.
Figure 11
GSIOC ID
(0–9)
Figure 12
Baud Rate
0 = External
1 = 9600 Baud
2 = 19200 Baud
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