Mercury 2+ Operator Terminal User Manual
Page 23 of 82
2019r0
With no local switch, the Mercury terminal receives power when
the IS interface module in the safe area is connected. On
connection, a beep sounds and the initialisation routine starts with
a logo scrolling up the screen. The model number and software
version are then detailed on the LCD, the cursor appears and the
keyboard mode is indicated in the bottom right corner.
Automatic Message Recall
A feature of the Mercury 2+ terminal is the automatic Message
Recall. Immediately after powering up and the version message
has been displayed, the Terminal automatically recalls Message
No. 1.
For example, this may be a string of text or an escape sequence to
set keyboard mode.
Point-to-Point Mode
The single Terminal "dumb" mode is the default mode of
operation, with simple transmission of characters to the host
computer on key press, and display of received characterson the
LCD.
Multi-drop Mode
Up to fifteen Mercury terminals can be installed on a single multi
drop operation.
Modbus Mode
The Mercury terminal supports the industry standard Modbus
protocol. Up to fifteen Mercury terminals can be installed on a
single Modbus operation. The Modbus system uses the IS
Interface Module as the tristate controlled communication port.
The Mercury 2+ product is capable of receiving firmware updates,
which may be issued by Mercury HMI Ltd as and when new
features are added.
See appendix H for further details.
Applying Power
Operational Modes
Powering Up
Firmware Update
Mode
