Delta Tau PMAC 1.5 Lite, Справочник по аппаратуре

Страница: 42 / 49

PMAC-Lite Hardware Reference
Connector Pinouts 37
J4A (JRS422): Serial Port Connector
J4A JRS422 (26-Pin
Connector)
Front View
Pin # Symbol Function Description Notes
1 CHASSI Common PMAC Common
2 S+5V Output +5VDC Supply Deactivated by “E8”
3 RD- Input Receive Data Diff. I/O Low True= **
4 RD+ Input Receive Data Diff. I/O High True *
5 SD- Output Send Data Diff. I/O Low True **
6 SD+ Output Send Data Diff. I/O High True *
7 CS+ Input Clear to Send Diff. I/O High True **
8 CS- Input CLEAR TO Send Diff. I/O Low True
9 RS+ Output Req. to Send Diff. I/O High True **
10 RS- Output Req. to Send Diff. I/O Low True *
11 DTR Bidirect Data Term Read Tied to “DSR”
12 INIT/ Input PMAC Reset Low is “RESET”
13 GND Common PMAC Common **
14 DSR Bidirect Data Set Ready Tied to “DTR”
15 SDIO- Bidirect Special Data Diff. I/O Low True
16 SDIO+ Bidirect Special Data Diff. I/O High True
17 SCIO- Bidirect Special CTRL. Diff. I/O Low True
18 SCIO+ Bidirect Special CTRL. Diff. I/O High True
19 SCK- Bidirect Special Clock Diff. I/O Low True
20 SCK+ Bidirect Special Clock Diff. I/O High True
21 SERVO- Bidirect Servo Clock Diff. I/O Low True ***
22 SERVO+ Bidirect Servo Clock Diff. I/O High True ***
23 PHASE- Bidirect Phase Clock Diff. I/O Low True ***
24 PHASE+ Bidirect Phase Clock Diff. I/O High True ***
25 GND Common PMAC Common
26 +5V Output +5VDC Supply Power supply out
The JRS422 connector provides the PMAC with the ability to communicate both in RS422 and RS232.
In addition, this connector is used to daisy chain interconnect multiple PMACs for synchronized
operation. Jumpers E107 and E108 must connect pins 2 and 3 to use this port.
* Note: Required for communications to an RS-422 host port
** Note: Required for communications to an RS-422 or RS-232 host port
*** Note: Output on card @0; input on other cards. These pins are for synchronizing multiple PMACs
together by sharing their phasing and servo clocks. The PMAC designated as card 0 (@0) by its jumpers
E40-E43 outputs its clock signals. Other PMACs designated as cards 1-15 (@1-@F) by their jumpers
E40-E43 take these signals as inputs. If synchronization is desired, these lines should be connected even
if serial communications is not used.
See Also:
Serial Communications
Synchronizing PMAC to other PMACs
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com