Turbo PMAC2 Hardware Reference Manual
J5 (JRS232) Serial Port Connector
J5/JRS232 (10-Pin Header)
Front View
Pin #
Symbol
Function
Description
Notes
1
PHASE
IN/OUT
Phasing Clock
See Notes 1, 2
2
DTR
BIDIRECT
Data Term Rdy
Tied to "DSR"
3 TXD/ INPUT
Receive
Data
Host transmit data
4
CTS
INPUT
Clear To Send
Host ready bit
5
RXD/
OUTPUT
Send Data
Host receive data
6
RTS
OUTPUT
Req. To Send
PMAC ready bit
7
DSR
BIDIRECT
Data Set Ready
Tied to "DTR"
8
SERVO
IN/OUT
Servo Clock
See note 2
9 GND
COMMON
PMAC
Common
10
+5V
OUTPUT
+5Vdc Supply
Power supply out
The JRS232 connector provides the PMAC2-PC with the ability to communicate serially with an
RS232 port. This connector cannot be used for daisychain communication interconnection of
multiple PMACs, although it can be used to share servo and phase clocks for synchronicity. The
J5A RS-422 interface is required for daisychain communication.
Jumpers E17 and E18 must connect pins 1 and 2 to use this port for serial communications.
Note 1: If communicating to PMAC2 over this connector with a "modem" style terminal emulator
such as Microsoft Windows Terminal, line 1 should not be connected.
Note 2: SERVO and PHASE are outputs if jumper E1 is OFF; they are inputs if jumper E1 is ON.
16
Connector Pinouts
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