APPENDIX A IMU Technical Specifications
OEM7 SPAN Installation and Operation User Manual v14
238
STIM300
Receiver
Pin
Pin Name
Pin
Pin Name
Description
1
STIM TXD-
OEM729 COM1: 15
PwrPak7 COM1: 4
COM2: 12
COMx_
RXD-
Part of RS-422 transmit pair from STIM300
2
STIM RxD-
OEM729 COM1: 17
PwrPak7 COM1: 1
COM2: 19
COMx_
TXD-
Part of RS-422 receive pair from STIM300
3
NC
–
–
Do not connect
4
STIM TOV
OEM729: 7
PwrPak7: 23
EVENT_
IN2
Interface Circuit Required
The STIM TOV output uses 5V logic, but
the OEM7 EVENT_IN lines are not 5V tol-
erant. A circuit to convert from 5V logic to
3.3V levels is required.
5
NC
–
–
Do not connect
6
NC
–
–
Do not connect
7
NC
–
–
Do not connect
8
5V Pwr
–
–
5 VDC power supply
9
STIM TxD+
OEM729 COM1: 18
PwrPak7 COM1: 3
COM2: 20
COMx_
RXD+
Part of RS-422 transmit pair from STIM300
10
STIM RxD+
OEM729 COM1: 20
PwrPak7 COM1: 2
COM2: 10
COMx_
TXD+
Part of RS-422 receive pair from STIM300
11
NC
–
–
Do not connect
12
GND
Any receiver ground pin
13
GND
Any receiver ground pin
14
NC
–
–
Do not connect
15
GND
Any receiver ground pin
Table 130: OEM729 COM1 or PwrPak7 to STIM300 Pin Connections
For the location of the receiver ground pins and transmit and receive pairs, refer to the
ation and Operation User Manual
or
PwrPak7 Installation and Operation User Manual
.