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CJ1-H and CJ1M CPU Unit Features Section 1-3
GRAY CODE CONVER-
SION (GRY(474)) for Easy
Conversion of Parallel
Inputs from Absolute
Encoders to Binary, BCD,
or Angle Data
This instruction converts Gray binary codes to binary, BCD, or angle data.
This enables easily handling position or angle data input as parallel signals
(2
n
) from an Absolute Encoder with a Gray code output using a DC Input Unit.
EXPANDED BLOCK COM-
PARE (BCMP2(502)) for
Comparison Judgements
for Up to 256 Ranges
(Upper/Lower Limits) with
One Instruction
This instruction determines if a value is within any of up to 256 ranges defined
by upper and lower limits. When used with the GRAY CODE CONVERSION
(GRY(474)) instruction, the same operation as a cam switch can be achieved
by determining if an angle input from an Absolute Encoder is in a comparison
table.
Easier Processing of I/O
Devices with Special I/O
Instructions
Previously many instructions were required to read or write data for external
input devices such as digital switches and 7-segment displays connected to
Basic I/O Units. Now, I/O processing for these devices can be achieved with a
single instruction. These are sometimes call Combination Instructions.
These instructions are the same as those supported by the C200HX/HG/HE
and CQM1H PLCs, with the exception that more than one of each of these
instructions can be executed in a single user program.
TEN KEY INPUT (TKY(211))
Sequentially reads numbers input from a ten-key connected to an Input Unit.
HEXADECIMAL KEY INPUT (HKY(212))
Sequentially reads numbers input from a hexadecimal keypad connected to
an Input Unit and an Output Unit for a maximum of 8 digits.
DIGITAL SWITCH INPUT (DSW(213))
Reads numbers input from a digital switch or thumbwheel switch connected to
an Input Unit and an Output Unit. Either 4 or 8 digits are read.
MATRIX INPUT (MTR(210))
Sequentially reads 64 input points input from a 8 x 8 matrix connected to an
Input Unit and an Output Unit.
7-SEGMENT DISPLAY OUTPUT (7SEG(214))
Converts 4-digit or 8-digit values to data for a 7-segment display and outputs
the result.
Read/Write CPU Bus Unit
Memory Areas with
IORD(222)/IOWR(223)
Although INTELLIGENT I/O READ (IORD(222)) and INTELLIGENT I/O
WRITE (IOWR(223)) could previously be used only for Special I/O Units,
these instructions can now be used to read and write data for CPU Bus Units.
Easier Network Connections and More-advanced Seamless Network Communications
Online Connections via
Networks without I/O
Tables
Online connection is possible to any PLC in the local network from a Program-
ming Device, such as the CX-Programmer, as soon as the network is con-
nected. It’s not necessary to create the I/O tables to enable connection;
automatic I/O allocation at startup is used. This eliminates the need to use a
serial connection to create I/O tables before the CX-Programmer can be con-
nected via Ethernet. Only an Ethernet connection through a CJ1W-ETN21
Ethernet Unit is required to go online and create I/O tables.
Work Across Up to Eight
Networks with CX-Net in
CX-Programmer Version
4.0 or Higher
FINS commands can be sent across up to 8 network levels (including the local
network). This enables a wider range of communications between devices on
Ethernet and Controller Link Networks.
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