Rabbit OP7100 User Manual Page 50

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44 eDisplay (OP7200)
3.10 Programming Cable
The programming cable is used to connect the programming port of the RabbitCore module
to a PC serial COM port. The programming cable converts the RS-232 voltage levels used
by the PC serial port to the TTL voltage levels used by the Rabbit 2000.
When the PROG connector on the programming cable is connected to the RabbitCore
module’s programming header, programs can be downloaded and debugged over the serial
interface.
The DIAG connector of the programming cable may be used on the programming header of
the RabbitCore module with the module operating in the Run Mode. This allows the pro-
gramming port to be used as a regular serial port.
3.10.1 Changing Between Program Mode and Run Mode
The OP7200 is automatically in Program Mode when the PROG connector on the pro-
gramming cable is attached to the RabbitCore module, and is automatically in Run Mode
when no programming cable is attached. When the Rabbit 2000 is reset, the operating
mode is determined by the status of the SMODE pins. When the programming cable’s
PROG connector is attached, the SMODE pins are pulled high, placing the Rabbit 2000 in
the Program Mode. When the programming cable’s PROG connector is not attached, the
SMODE pins are pulled low, causing the Rabbit 2000 to operate in the Run Mode.
Figure 21. OP7200 Program Mode and Run Mode Set-Up
A program can be run in either mode, but can only be downloaded and debugged when the
OP7200 is in the Program Mode.
Refer to the Rabbit 2000 Microprocessor User’s Manual for more information on the pro-
gramming port and the programming cable.
Program Mode
Run Mode
RESET OP7200 when changing mode:
Cycle power off/on
after removing or attaching programming cable.
D23
D20
+PWR PWR +K OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 GND
IN12 IN13 IN14 IN15 /RST TXC RXC TXD RXD 485 +485 GND
J10
J15
IN16 IN17 IN18 AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 AGND
IN0 IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11
J2
J6
J3
D23
D20
+PWR PWR +K OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 GND
IN12 IN13 IN14 IN15 /RST TXC RXC TXD RXD 485 +485 GND
J10
J15
IN16 IN17 IN18 AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 AGND
IN0 IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11
J2
J6
J3
J1
CAUTION: Disconnect power
before making or removing
terminal connections.
J2
J6
J3
J10
PROG
1
1
1
1
E-Net
R-Net
1
USR PWR
LNK ACT
+
J1
CAUTION: Disconnect power
before making or removing
terminal connections.
J2
J6
J3
J10
PROG
1
1
1
1
E-Net
R-Net
1
USR PWR
LNK ACT
+
DIAG
PROG
Colored edge
To
PC COM port
Programming
Cable
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