SD7540A Stepper Drive
20 Gear Drive, Plymouth Industrial Park, Terryville, CT 06786
page: 11
Tel: (860) 585-1254 Fax: (860) 584-1973 Web: www.amci.com
ADV ANC ED
MIC RO CON T RO L S INC.
Programmer Wiring – CSMD-5 cable
SD7540A Connector – AMCI part # MS-8P Serial Port Connector – DB-9
To SMD
To PC Serial Port
1. DC Supply
24-75Vdc
1. N/C
2. DC Common
Vdc com
2. RXD
3. DTR
3. TXD
4.
RXD
4.
DTR
5. RTS
5. GND
6.
N/C
6.
N/C
7. TXD
7. RTS
8.
GND 8.
N/C
9. N/C
Use a general purpose diode with a breakdown voltage greater than 30Vdc such as 1N4005
or 1N4148 to protect the SD RTS input.
The eight pin connector of the SD7540A is used for programming and control. The SD7540A drive
monitors the TXD signal coming from the computer’s serial port for a specific sequence of data.
When the SD7540A receives this data, it enters programming mode. To exit programming mode
you must cycle power on the SD7540A and reconnect the motion control signals. The SD7540A
automatically enters motion mode when power is re-applied.
