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241
GRT1-CT1(-1) Counter Units
Section 7-4
Note
Each command is executed only once when the command bit is turned ON.
Command bits are not reset automatically and must be reset by the user.
Make sure to reset the command bit after execution of the command has
been completed (i.e., after the corresponding Completed Flag has turned ON
in word m+2). Also, make sure that all command bits are OFF when the Unit
is started, including starting a new Unit after Unit replacement.
Input Data
The following table describes the data input from Counter Unit to the Input
Area allocated in the Master. This data is used to monitor counter data and
Counter Unit operating status.
“m” is the first word in the Input Area allocated to the Counter Unit in the Mas-
ter.
n+2
(contin-
ued)
11
Reset Command Bit
(See note.)
Turn ON this bit to reset the Present Counter Value to 0.
12 and
13
Output Control Bits
These bits control the digital output (OUT).
Bit: 13 12
0 0 = Digital output controlled by range (LL and UL).
0 1 = Digital output turned OFF.
1 0 = Digital output turned ON.
1 1 = Digital output turned ON.
14 and
15
Reserved.
Words
Bits
Definition
Word
Bits
Definition
m and
m+1
00 to 15
Counter Data
The data from the Counter Unit specified by the Register Selection Bits (bits 00 to 02 of word n+2)
when the Counter Data Display Command Bit (bit 04 of n+2) was last turned ON is displayed here.
Check the Display Register Indication Bits (bits 00 to 02 of word m+2) to verify what data is currently
displayed here.
m+2
00 to 02
Display Register Indication Bits
These bits indicate which register is displayed in words m and m+1.
Bit: 02 01 00
0 0 0 = Present Counter Value
0 0 1 = Present Frequency (frequency of A input signal in Hz)
0 1 0 = Capture Value Register
0 1 1 = Preset Value Register
1 0 0 = Range Value Register (LL)
1 0 1 = Range Value Register (UL)
1 1 0 = Not supported
1 1 1 = Not supported
“Not supported” means that no register is assigned to that bit combination.
03
Write Command Completed Flag
This flag turns ON when the Write Command has been completed (triggered by the Write Command
Bit, bit 03 of word n+2). This flag will turn OFF when the Write Command Bit is reset.
04
Multiple Commands Warning Flag
This flag will turn ON if more than one of the following bits was turned ON at the same time:
Word n+2, bits 03, 09, 10, and 11.
The commands will be executed but the results may be unexpected.
05
Reserved.
06
Underflow Flag
This flag will turn ON if the count value underflows. Counting will stop with the count value at the
lower limit. The lower limit is
−
2,147,483,648. To restart counting, preset or reset the counter value.
This flag will turn OFF when counting restarts.
Summary of Contents for SMARTSLICE GRT1-DRT
Page 1: ...OPERATION MANUAL Cat No W455 E1 08 SmartSlice GRT1 Series Slice I O Units ...
Page 3: ...SmartSlice GRT1 Series Slice I O Units Operation Manual Revised December 2018 ...
Page 4: ...iv ...
Page 6: ...vi ...
Page 20: ...xx EC Directives 6 ...
Page 62: ...42 Connecting Turnback Cables Section 3 3 ...
Page 250: ...230 Maintenance Information Window Section 7 3 Maintenance Information Window ...
Page 292: ...272 GRT1 CP1 L Positioning Unit Section 7 5 ...
Page 300: ...280 GRT1 END End Unit Section 8 5 Dimensions 11 9 11 9 55 7 1 5 19 5 83 5 2 9 2 9 OMRON ...
Page 322: ...302 Troubleshooting by Unit Section 9 5 ...
Page 350: ...330 Explicit Messages Appendix A ...
Page 354: ...334 Power Consumption and Weight Tables Appendix C ...
Page 356: ...336 I O Current Consumption Table Appendix D ...
Page 364: ...344 Revision History ...
Page 365: ......