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Interfacing the MDrive SPI Interface
(Connector P2)
The MDrive's SPI communications connector is a 10 pin IDC header. The
recommended means of connecting to the header is with the 6 foot (1.8m)
Parameter Setup Cable MD-CC100-000.
The setup cable eliminates the need for the
user to wire communications to the MDrive.
In addition to offering ease of connection,
this cable features a built-in logic level
shifter for PC's that run on 3.3V output
ports. This cable plugs in easily to connect a
standard DB-25 PC Parallel/SPI port to the
MDrive's 10 pin pin-header (P2).
Figure 1.5.5: Parameter Setup Cable for MDrive 17/23
WARNING! The +5VDC output on connector P2 is used for the setup
cable ONLY! This output is not designed to power external devices!
WARNING! The Parallel/SPI Port on your PC must be set to one of the following:
output only
Try the SPI connection using the default parallel port setting first. If necessary, the
Parallel/SPI port may be configured in the bios of your PC.
PIN 1
GND - PIN 5
MOSI - PIN 7
10 Pin Header
*Use ONLY to power IMS MD-CC100-000
MDrive Connector P2 (SPI Interface)
Pin Name
Pin #
Wire Size
1
N/C
2
N/C
3
N/C
CS
4
AWG 22
GND
AWG 22
5
+5 VDC
6
AWG 22
7
AWG 22
MOSI
CLK
AWG 22
8
N/C
9
10
MISO
AWG 22
Table 1.5.2: P2 Pin Assignment and Description
bi-directional
PIN 4 - CS
PIN 6 +5VDC OUT*
PIN 8 - CLOCK
PIN 10 - MISO
P2
Figure 1.5.6: SPI Interface Wiring and Connections
Description
No Connect
No Connect
No Connect
Chip Select
Communications Ground
+5 VDC Output (See Warning Below)
Master Out/Slave In
Clock
No Connect
Master In/Slave Out
EPP (Extended Parallel Port)
The SPI communication wiring may
require a logic level shifting interface.
Logic Level
2
3
Shifting and
Conditioning
Interface
15
To Customer PC
Parallel/SPI Port
DB-25
MD-CC100-000
Parameter Setup Cable
DB25 Standard
PC Parallel / SPI Port
4
19
Ground
To MDrive
41
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