Leica M500 N Service Manual page 16

Description
08/2007 Gahe
Display / Keyboard
The communication with the user is done with help of an high-contrast display and a keyboard with nine keys. The
display is a LCD Matrix (240x128 dots) with integrated Graphic controller and backlight.
Can-bus
The CAN-bus has two go-through-input/outputs with two identical parallel connectors.
Hand/Footswitch
There are two RS232 interface-connectors available for all available hand / footswitches. They are wired to the
DUART-interface and are clocked with 4800 Baud. The control unit periodically (60ms) sends a request to the
connected footswitch. It sends back a status code (2 Byte), indicating which key is pressed/not pressed.
Service interface
A double RS232 interface is provided for service purposes. They are both wired directly to the Processor (RXD0/TXD0,
RXD1/TXD1) The connector P7 is used for both of them. COM1 (RXD0/TXD0) is programmed for a service-terminal, for
example for downloading new software
Additional function
There are two relay-contacts on the control unit connector panel for additional functions. The maximum permissible
loading for one contact is 1 A/24 V DC. The relay-contacts can be programmed to switch- or toggle mode.
Software history
Software Release date
version
1.4 02/98
1.54 01/00
1.76 04/02
1.81
1.84
1.87
Software compatibility in respect of optics carrier see
version into the Flash-EPROM.
HW control module
10 661 330
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chapter inspection / step
Service manual M500 N, M520, M525
1-12
Compatibility
M500 N
M500 N
M500 N
M500 N
M500 N
M500 N, M520, M525
2.13.
Doc Code 10 665 751
Remark
Supports Can handles, DI C500
Supports OH3
Supports MS3, CAN handle can
be configured separate
Supports M520, M525