AutomationDirect DURAPULSE Series - RS-232 C to RS-485 Conversion

Chapter 5: DURAPULSE MODBUS Communications
5–16
RS-485 Direct Connections (continued)
RS-232C to RS-485 Conversion
An RS-485 network cable can span up to 1000 meters (4000 feet). However, many
AutomationDirect PLCs have only RS-232C communication ports, and require an
FA-ISOCON (RS-232C to RS-422/485 network adapter) in order to make an RS-485
connection.
Recommended cable for RS-232: Belden 8102 or equivalent.
Recommended cable for RS-485: Belden 9842 or equivalent.
Various pre-terminated cables for specific wiring connections are available from
AutomationDirect, as listed in applicable individual wiring sections of this chapter.
FA-ISOCON RJ-12 Serial Comm Port A
RS-232 Input Port
16
1: Signal Ground
2: CTS (input)
3: RXD (input)
4: TXD (output)
5: +5VDC in
6: Signal Ground
FA-ISOCON Switch Settings:
S21~S23 OFF, ON, ON (19200 baud)
S24~S27 OFF (Automatic Network Transmit Enable)
Terminate ON (end of run term resistors)
Bias (2) ON (end of run bias resistors)
1/2 DPX (2) ON (RS-485 TXD/RXD jumpers)
If an FA-ISOCON module is used, set the module dipswitches as required.
Refer to the FA-ISOCON manual for more detailed information.
Cable D0-DSCBL (12ft; 3.7m) is available for connecting the DL05 to the FA-ISOCON.
For a single run to only one AC Drive
, cable GS-ISOCON-CBL-2 (2m; 6.6ft) is available
for directly connecting the FA-ISOCON to the DURAPULSE Com Port.
120⏲ Termination Resistor
at both ends of network
TXD+
TXD–
RXD–
15
RXD+
0V
11
TXD+ / RXD+
Signal GND
TXD– / RXD–
RTS+
RTS–
CTS+
CTS–
D0-DCM/DL06/DL260 Port 2 **
GS3
Comm Port *
2 GND
3 SG –
4 SG +
10
1
6
5
Connect shield to signal ground at one end only
GS3
Comm Port *
2 GND
3 SG –
4 SG +
Node 1
Node 2
* Consider using ZIPLink RJ12 Feedthrough Modules ZL-RTB-RJ12 for easy wiring termination.
** Consider using ZIPLink 15-pin high-density Comm Port Adapter, ZL-CMA15 or ZL-CMA15L, for easy wiring termination.
For Single Cable Runs of 2m (6.6 ft) or less to only one AC Drive: Use pre-terminated cable GS-485HD15-CBL-2 for easy wiring.
D0-DCM/DL06/DL260:
RS-485 Connection Wiring
DURAPULSE AC Drive User Manual
1st Ed. Rev. D 05/2013