Omron CJ - 09-2009 Operation Manual page 67

CJ1-H and CJ1M CPU Unit Features
GRAY CODE CONVER-
SION (GRY(474)) for Easy
Conversion of Parallel
Inputs from Absolute
Encoders to Binary, BCD,
or Angle Data
EXPANDED BLOCK COM-
PARE (BCMP2(502)) for
Comparison Judgements
for Up to 256 Ranges
(Upper/Lower Limits) with
One Instruction
Easier Processing of I/O
Devices with Special I/O
Instructions
Read/Write CPU Bus Unit
Memory Areas with
IORD(222)/IOWR(223)
Easier Network Connections and More-advanced Seamless Network Communications
Online Connections via
Networks without I/O
Tables
Work Across Up to Eight
Networks with CX-Net in
CX-Programmer Version
4.0 or Higher
This instruction converts Gray binary codes to binary, BCD, or angle data.
This enables easily handling position or angle data input as parallel signals
n
(2 ) from an Absolute Encoder with a Gray code output using a DC Input Unit.
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.
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.
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.
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.
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.
Section 1-3
19