5.1.1 Local Communications with a Laptop Computer
For local communications, a single Hydran M2-X or a network of Hydran M2-X’s
can be linked directly to a laptop computer (see Figure 5-2) running Perception. To
do this, one Hydran M2-X in the daisy chain must be temporarily linked to the laptop
computer using the supplied RS-232 serial communication cable. The RS -232 cable
is attached to the Hydran M2-X’s DB-9 connector. The Hydran M2-X’s RS-232 port
should not be used for permanent connection to a computer.
Note: The maximum distance for an RS-232 local link is 7.5 m (25 ft).
Figure 5-2: Local Communications with a Laptop Computer
5.1.2 Remote Communications with a Host Computer (via Modem)
For remote communications, a single Hydran M2-X or a network of Hydran M2-
X’s can be linked, through a modem, to the host computer running the Perception
software. To do this, the first or last Hydran M2-X in the daisy chain must be linked
to a Hydran 201Ci Controller (equipped with a modem) using a supervisory link (see
Section 5.2.5). A typical configuration is shown in Figure 5-3 on the next page.
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