TWINFLEX
®
SRP Control Panel Engineering and Commissioning Manual
17
Ethernet
This port on the panel is reserved for future use.
Write Protect / Write Enable Switch
The write protect / write enable switch is a two position switch which is normally set to stop options in the
engineer menu from being inadvertently changed.
Note: when this switch is in the on position the general fault LED will flash to remind the Engineer the switch is
on.
ON
Switch in
OFF position
Write Protect Mode:
In the OFF position, as shown (left), engineering options
may be viewed but no configuration changes made.
ON
Switch in
ON position
Write Enable Mode:
If configuration changes are to be made, this switch needs
to be in the ON position as shown (left).
USB-B
The panel is fitted with an on board USB-B connector. This is to provide
communication via a suitable USB lead to a PC for programming of panel
options using the TWINFLEX
®
SRP OSP configuration software.
Buzzer Link: J1
Linking J1 will disable the panel buzzer. The buzzer will remain disabled whilst the link is in place.
Warning
–
To comply with EN54 and BS5839: Pt1: 2002 this link must be left OPEN.
LCD Contrast: R4
The LCD contrast may be adjusted by rotating the screw on the variable resistor, located in the upper right hand
corner of the main PCB. Rotate anticlockwise to reduce the contrast (lighten text). Rotate clockwise to
increase the contrast (darken text).