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The HHM Display

The Hand-held Monitor has a 4-line LCD screen. On a new Hand-held Monitor, displays are in English. The display language can easily be changed to French, German, or Italian. (Instructions for changing the display language are on page 3-5).

In addition to alphanumeric characters, the display uses the following special characters:

IT

tri-stateinput.

OT

Output with Feedback, or block with both inputs and outputs.

4circuit is forced OFF.

1circuit is forced ON.

Orelay block point is forced open.

Crelay block point is forced closed.

BS

circuit controls a Bus Switching Module.

?reference address or Device Number not yet assigned.

*reference address is out of range for the presently-selected HHM host.

For a list of other HHM abbreviations and their meanings, select F3 (HELP) from the

HHM Utilities menu.

Keyswitch

The Hand-held Monitor's keyswitch can be used to restrict access to certain features of the HHM.

With the key present, the switch can be placed in either ªconfigureº (cfg) or ªmonitorº (mon) position.

cfg with the switch in Configure position, all HHM functions are available. In this mode, the Hand-held Monitor can be configured to determine which of its fea- tures will be usable once the key is removed.

mon: with the keyswitch in Monitor position, the HHM can monitor bus and block data. Additional HHM functions, such as clearing faults or configuring I/O blocks, can be used in Monitor mode only if the HHM has been set up to permit their use.

The key must be present to move the switch from Monitor to Configure mode position; it can only be removed in MON position. Two identical keys are supplied with each Hand-held Monitor. The key should be removed if system security is a concern.

Accessories

The Hand-held Monitor comes with:

HA sturdy removable leather case. The case has a rear tab with snap closure for carrying the HHM on a belt. The handle can be pivoted back to stand the Hand-held Monitor upright on a table.

HA rechargeable battery pack.

HA battery charger/adapter with 8-ft cord.

HTwo keys for the mode-selection keyswitch.

HA removable 5 ft (1.5 meter) coiled communications cable.

GFK-0121E

Chapter 1 Introduction

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Socket Mobile GFK0121E manual HHM Display, Keyswitch, Accessories