The DT7837 module provides a 26-pin Digital connector for attaching the tachometer input, digital I/O, external trigger, and counter/timer signals. To make wiring signals easier, you can attach the STP26 screw terminal panel to this connector.
The layout of the Digital connector is shown below.
The following table lists the pin assignments of this connector.
Pin Assignments of the Digital Connector
Connector Pin Number |
Signal Description |
Connector Pin Number |
Signal Description |
1 |
General-Purpose Input 0a |
14 |
General-Purpose Output 3b |
2 |
General-Purpose Input 1a |
15 |
General-Purpose Output 4b |
3 |
General-Purpose Input 2a |
16 |
General-Purpose Output 5b |
4 |
General-Purpose Input 3a |
17 |
General-Purpose Output 6b |
5 |
General-Purpose Input 4a |
18 |
General-Purpose Output 7b |
6 |
General-Purpose Input 5a |
19 |
Digital Ground |
7 |
General-Purpose Input 6a |
20 |
Digital Ground |
8 |
General-Purpose Input 7a |
21 |
Reserved |
9 |
Digital Ground |
22 |
Digital Ground |
10 |
Digital Ground |
23 |
Tachometer Input |
11 |
General-Purpose Output 0b |
24 |
Digital Ground |
12 |
General-Purpose Output 1b |
25 |
+5 V |
13 |
General-Purpose Output 2b |
26 |
Digital Ground |
a. The input signals are +5 V tolerant and 22 kW pull-ups are provided. By default, they are configured as digital input signals.
b. The output signals are driven by LVTTL buffers and are capable of providing up to ±24 mA of drive current at standard LVTTL levels. By default, they are configured as digital output signals.
Using software, you can specify a general-purpose input signal as the signal source for the following destinations:
Digital input (the default signal for each general-purpose input pin)
External A/D trigger input
Gate input for the general-purpose counter/timer (C/T 0)
Clock input for the general-purpose counter/timer (C/T 0)
Using software, you can specify a general-purpose output signal as the signal source for one of these destinations:
Digital output (the default signal for each general-purpose output pin)
Clock output for the general-purpose counter/timer
(C/T 0)