G&L MMC-A2, Руководство по оборудованию

Страница: 130 / 192

MMC Ethernet TCP/IP Option Module
122 MMC Hardware Manual G & L Motion Control Inc.
Table 6-5:
COMM Port Pin Descriptions
Function Notes Pin
Receive Data RS232-level signal that receives serial data from
the connected PC running PiCPro. 2
Transmit Data RS232-level signal that transmits serial data to the
connected PC running PiCPro. 3
Signal Ground Provides the return path for signals 5
Data Terminal
Ready Always high (greater then +3 Vdc) 4
Request-to-send
RS232-level signal that indicates to the connected
serial device that it can transmit data to the Mod-
ule.
7
Clear-to-send
RS232-level signal that indicates to the Module
that it can transmit data to the connected serial de-
vice.
8
Shield Ground Provides a path for shield current through the
chassis to an external single point ground. Connector
Shell
Table 6-6: COMM Port Pin Assignments
Pin Signal In/Out Pin Sequence
1 NC N/A
9-pin male D-sub
2 RS232 Receive Data In
3 RS232 Transmit Data Out
4 NC NA
5 Signal Ground In/Out
6 NC N/A
7 Request-to-send Out
8 Clear-to-send In
9 NC N/A
Connector
Shield Shield In
1
6
5
9
Connector
Shell