Metrohm 867 pH Module - Manual (Page 25)

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3 Installation
867 pH Module
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You can, for example, connect an 849 Level Control (fill level monitoring
in a canister) or a 731 Relay Box (switch box for 230/110 volt alternating
current sockets and low-voltage direct current outlets). The Remote Box
also has an MSB socket at which a further MSB device, e.g. a dosing
device or a stirrer, can be connected.
You will find precise information concerning the pin assignment of the
interface on the Remote Box in the appendix.
3.4 Connecting USB devices
3.4.1 General
The 867 pH Module has two USB connectors (type A sockets) for periph-
eral devices with USB interfaces. The 867 pH Module functions as a USB
hub (distributor) no matter how it is operated. If you wish to connect
more than two devices to the USB, you can also use an additional, com-
mercially available USB hub.
CAUTION
CAUTION
If you operate the 867 pH Module with the aid of the Touch Control,
take care to ensure that the Touch Control is switched off when you set
up or disconnect connections between the various instruments. If you
use a PC software to control the 867 pH Module, you should exit the
program before you set up or disconnect the USB connections.
3.4.2 Connecting a USB hub
If you wish to connect more than two devices to the USB connector of the
867 pH Module, you can also use an additional commercially available
USB hub (distributor). If you operate the 867 pH Module with the help of
the Touch Control, then you should use a USB hub with its own power
supply.
Connect the USB hub as follows:
1 Switch off the Touch Control and/or exit the PC software.
2 With the aid of the 6.2151.020 cable, connect the USB connector of
the 867 pH Module (type A) with the USB connector of the hub (type
B, see manual for the hub).