Item Specification
Power consumption
Included in the CPU Unit power consumption.
The Option Board power consumption is included in the definition of the CPU Unit power con-
sumption.
Isolation method
No isolation
Isolation
*2
*1. Projecting parts such as a terminal block is not included. When the Option Board is mounted to the CPU Unit, it protrudes
through the CPU Unit surface. The details are explained in 5-3-13 Assembled Appearance and Dimensions on page
5-39.
*2.
The terminals are isolated from the internal circuits of the CPU Unit.
3-3-2
Purpose
A Serial Communications Option Board is used to connect the general-purpose components with a se-
rial interface to the CPU Unit in order to perform data I/O processing. The general-purpose compo-
nents with a serial interface includes a bar code reader
, T
emperature Controller and PT.
An RS-232C and RS422A/485 ports are supported, and up to two ports can be built in the CPU Unit.
The supported communications protocols are the host link, Modbus-RTU master, and no-protocol.
Refer to the NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (Cat. No. W579)
for details on how to use the Option Boards.
3-3-3
Part Names and Functions
RS-232C Option Board (NX1W-CIF01)
COMM
Communications status indicator
RS232C terminal block
SG0 RD SDER SG1 DR RS CS SHLD
l
Communications Status Indicator
Indicator Color Status Description
COMM Yellow Lit. Communications are being performed.
Not lit. Communications are not performed.
3 Configuration Units
3-23
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
3-3 Serial Communications Option Board
3
3-3-2 Purpose
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