G&L MMC-A2, Hardware Manual

Page: 107 / 192

Standalone Digital MMC Control
G & L Motion Control Inc. MMC Hardware Manual 99
Table 5-7:
User Port Pin Descriptions
Function Notes Pin
RS232 Receive Data RS232-level signal that receives serial data from
the connected serial device. 9
RS232 Transmit Data RS232-level signal that sends serial data to the
connected serial device. 10
RS232 Request-to-send RS232-level signal that indicates to the connected
serial device that it can transmit data to the Con-
trol. 5
RS232 Clear-to-send RS232-level signal that indicates to the Control
that it can transmit data to the connected serial de-
vice. 7
RS-232 Data-terminal-
ready This output from the Control is always high
(5 Vdc). 4
RS-485 Receive Data + RS485-level signal that receives serial data from
the connected serial device(s). 12
RS-485 Receive Data - RS485-level signal that receives serial data from
the connected serial device(s). 13
RS-485 Transmit Data
+ RS485-level signal that transmits serial data to the
connected serial device(s). 14
RS-485 Transmit Data - RS485-level signal that transmits serial data to the
connected serial device(s). 15
Signal Ground Provides the return path for signals 8
Shield Ground Provides a path for shield current through the chas-
sis to an external single point ground. Shell