EasyManuals Logo

Omron CQM1H - 08-2005 User Manual

Omron CQM1H - 08-2005
285 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #244 background imageLoading...
Page #244 background image
219
Absolute Encoder Interface Board Section 8-3
Observe the following precautions when using a type of Absolute Encoder
other than the 3 types listed above.
It is possible to use an encoder with a bit resolution different from the 3
types listed above (e.g., a 9-bit encoder.) In this case, set the next higher
bit resolution that is available. For example when a 9-bit encoder is being
used, set the resolution to 10 bits.
The following limitations will result if the actual encoder’s bit resolution
does not match the bit resolution set in the PC Setup.
If the Count Mode is set to in 360° Mode in the PC Setup (bits 08 to 15
of DM 6643 or DM 6644), the PV (monitor value) is converted accord-
ing to the resolution set in the PC Setup so the 0 to 360
° range will not
change.
The origin compensation function will not operate properly. Compen-
sation must be performed in the ladder program.
Note There are Absolute Encoders that output a range of 76 to 435 when
in 360
° Mode.
In this case, the output range can be corrected by setting a value of
0076 (BCD) for the origin compensation setting in the PC Setup.
(The setting for port 1 is in DM 6611 and the setting for port 2 is in
DM 6612.)
Compensation such as shifting the origin will not be possible, so if
more compensation is required, it must be performed in the ladder
program.
Even with a 10-bit encoder, there are some encoders with a resolution of
720 rather than 1,024. These encoders will not output properly in
360°
Mode.
8-3-9 Internal Circuit Configuration
Name Pin No.
Encoder input
Bit 2
11
of binary gray code from encoder
Encoder input
Bit 2
10
of binary gray code from encoder
Encoder input
Bit 2
1
of binary gray code from encoder
Encoder input
Bit 2
0
of binary gray code from encoder
Common input
Common input
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Omron CQM1H - 08-2005 and is the answer not in the manual?

Omron CQM1H - 08-2005 Specifications

General IconGeneral
CategoryProgrammable Logic Controller (PLC)
ManufacturerOmron
Program Capacity3.2K steps
ModelCQM1H
I/O Points512 points max

Related product manuals