Waters ACQUITY CM-30S, Обзор и руководство по обслуживанию, Страница: 65 / 146

Connecting an external valve
October 7, 2014, 715004178 Rev. B 65
Connecting an external valve
The CM-30S supports up to three external valves. Each external valve must
have a unique address (0, 1, or 2).
Required materials
• 3-gang, RS-232 serial-adaptor cable
• Female-to-female serial cable coupler adapter (up to 3, depending on the
number of external valves)
• #0 flat-blade screwdriver
To connect an external valve to the CM-30S:
1. Depending on whether you are using one external valve or two or more
valves, set valve addresses as follows:
•
If you are using one external valve and its address is not already 0,
use the #0 flat-blade screwdriver to turn the screw on the back panel
of the valve, setting the address to 0.
• If you are using more than one external valve, set the address of the
second valve to 1 and that of a third valve to 2.
Requirement:
The turn-screw on the back of the external valve must
align precisely with the address number. Otherwise, the external valve
cannot operate.
2. Connect the standard end of the 3-gang, RS-232 serial-adaptor cable
labeled “RS-232 B” to the RS-232 port on the back of the CM-30S (see
page 22 ).