Omron C500-LDP01-V1 User manual

C500-LDP01-V1
Ladder Program I/O Unit
Operation Manual
Revised January 1992

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Notice:
OMRON products are manufactured for use according to proper procedures by a qualified operator
and only for the purposes described in this manual.
The following conventions are used to indicate and classify warnings in this manual. Always heed the
information provided with them.
Caution Indicates information that, if not heeded, could result in minor injury or damage
to the product.
DANGER! Indicates information that, if not heeded, could result in loss of life or serious
injury.
OMRON Product References
All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers
to an OMRON product, regardless of whether or not it appears in the proper name of the product.
The abbreviation “Ch,” which appears in some displays and on some OMRON products, often means
“word” and is abbreviated “Wd” in documentation in this sense.
The abbreviation “PC” means Programmable Controller and is not used as an abbreviation for any-
thing else.
Visual Aids
The following headings appear in the left column of the manual to help you locate different types of
information.
Note Indicatesinformationofparticular interestfor efficientand convenient operation
of the product.
1, 2, 3...
1. Indicates lists of one sort or another, such as procedures, checklists, etc.
OMRON, 1992
                   
               
  
                  
                
      !          
                  
    

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  
 
 
  
   
       
 !" 
 
 
  " #!  "! $
 %!& " ' #! 
 
  
 '(
)
'" ("
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+ 
 ,& % -
 (
)
!" ("
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+ .
 /(
)
/ ("
*
% .
 /
)
/0
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+ .
$ 1
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 1
*
+ .

!""! 
  +  1 ! 
 2 1 
   2 1 
  3! 
 2" 2 
 
!" # "! $
 2  (4  12 '/2( 1 .
 ! / .
 '! 56! / 7
 '02 ( / 
 %
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$ 5 1  /8" $
$ 1! -

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  '! 
 5  +! " 2 
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&* ( ++ ,
* -. %

#
About this Manual:
This manual describes the installation and operation of the C500-LD01-V1 Ladder Program I/O Unit and
includes the sections described below.
Please read this manual completely and besure you understand theinformation provide before attempt-
ing to install and operation the Ladder Program I/O Unit.
Section 1
introduces the Unit and describes its components and the way it fits into a PC system. A com-
parison of the C500-LD01-V1 and the C500-LD01 is also provided.
Section 2
provides information on switch settings and how certain switch settings affect indicator opera-
tion. These switch must be set before mounting and operating the Unit.
Section 3
describes the data areas available for use in programming the Unit.
Section 4
provides information related to programming and operating the Unit. A list of programming in-
structions is provided in
Appendix C Programming Instructions . Details on programming can be found in
the
C500 Operation Manual .
Section5
describesthescanoftheUnitandhowtheoperatingmodeaffectsit.Italsodescribesscantime
and I/O response time calculations and provides tables of instruction execution times.
Section 6
provides basic troubleshooting steps, error messages provided by the indicators, andthe fuse
replacement procedure.


 

/ ! !     "!     '02 4  !8 #  "  '02
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3    "!   3    4
  
   
       
 !" 


1-1 Features
The C500-LDP01-V1 Ladder Program I/O Unit executes a ladder program to
control external I/O independently of the PC. The ladder program contained in
the Unit is written by the user.
The C500-LDP01-V1 Ladder Program I/O Unit can be used with the following
SYSMAC C-series PCs: C500, C1000H, C2000H.
Applications Examples •External I/O can be controlled by the Ladder Program I/O Unit instead of the
PC.
•The Ladder Program I/O Unit can be used as a timer.
•The Ladder Program I/O Unit can be used as a high-speed input unit.
•By controlling external inputs and outputs, the Ladder Program I/O Unit can
reduce the processing load handled by the PC.
C500 Instructions TheLadderProgramI/OUnit uses thesame instructionsastheC500,soladder
programscanbeconstructedinthesameway.Atotalof49 differentinstructions
is available. (Not all C500 instructions are supported.)
The16DCinputsand16 transistoroutputscanbe connectedtoexternalI/Ode-
vices so theUnit can beused as for normalI/O operation. Of the16 DCinputs, 8
inputs (2 groups of 4) can be set for high-speed inputs with a minimum pulse
width of 0.5 ms, so inputs shorter than the scan time can be detected.
The Unit connects to the PC through 16 input points and 16 output points, so
control signals can be passed back and forth between the PC andthe Unit. Fur-
thermore, when the I/O WRITE and I/O READ (WRIT(87)/READ(88)) instruc-
tionsareexecuted inthePC program, upto 32wordsofdata canbe transferred
to or from the Unit.
Built-in Realtime Clock A realtime clock is built into the Unit, so it can act as a timer and manage I/O
timing.
1-2 System Configuration
The following figure shows a typical system configuration:
RS-485
connecting
cable
GPC
Memory Pack
C500-MP303-EV2
Output devices
Input devices
The Unit can be programmed through the GPC with Memory Pack
C500-MP303-EV2, through the FIT, or through LSS running on an IBM AT/XT
compatiblecomputer.Referto
AppendixCProgrammingInstructions foralistof
instructions.OnlineoperationsbetweentheUnitandtheGPC/FIT/LSSarepos-
sible in PROGRAM or MONITOR mode. They are not possible in RUN mode.
External I/O Points:
16 Input/16 Output
PC I/O Points:
16 Input and 16 Output
  Section 1-2


1-3 Comparing the C500-LDP01 and the C500-LDP01-V1
Thefollowingtable shows the improvements thathavebeenmadetocreatethe
C500-LDP01-V1.
Item C500-LDP01 C500-LDP01-V1
Instruction set 40 instructions The following instructions were added to make a
total of 49 instructions.
ASL(25): ARITHMETIC SHIFT LEFT
ASR(26): ARITHMETIC SHIFT RIGHT
ROL(27): ROTATE LEFT
ROR(28): ROTATE RIGHT
COM(29): COMPLEMENT
INC(38): INCREMENT
DEC(39): DECREMENT
SLD(74): ONE DIGIT SHIFT LEFT
SRD(75): ONE DIGIT SHIFT RIGHT
Number of
words allocated 2 words 16 PC output bits (0000 through 0015)
16 PC input bits (0100 through 0115)
The PC cannot access the Unit using the I/O
WRITE and the I/O READ (WRIT(87)/READ(88))
instructions.
2 words
16 PC output bits (0000 through 0015)
16 PC input bits (0100 through 0115)
With the proper switch settings, the PC can
control the Unit using the I/O WRITE and I/O
READ (WRIT(87)/READ(88)) instructions.
(Up to 32 words are written or read.)
Operating
modes Linked
operation RUN
PROGRAM
Independent
operation RUN
PROGRAM
The GPC/FIT/LSS* can operate with the Unit in
PROGRAM mode only.
Linked
operation RUN
PROGRAM
Independent
operation
MONITOR
(DEBUG)
RUN
PROGRAM
MONITOR
(DEBUG)
The GPC/FIT/LSS* can operate with the Unit in
either PROGRAM or MONITOR (debug) mode.
*GPC: Graphic Programming Console
FIT: Factory Intelligent Terminal
LSS: Ladder Support Software
      Section 1-3

1-4 Nomenclature
Indicators
Switches
Remove the display window
to access the switches.
Output connectors
Connector for transistor outputs.
(Use connector provided.)
Input connector
Connector for 24 VDC power supply input.
(Use connector provided.)
RS-485 interface connector
Connector for the GPC, FIT, or
LSS. Use one of the following
cables:
3G2A2-CN221 (2 m)
C500-CN523 (5 m)
C500-CN131 (10 m)
C500-CN231 (20 m)
C500-CN331 (30 m)
C500-CN431 (40 m)
C500-CN531 (50 m)
Mounting screw
Backplane connector
DIP Switch
Mounting screw
Front Panel Back Panel
 Section 1-4


 
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/!!8#!9/4!:#!!""8
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 %!& " ' #! 

%
2-1 Front Panel Switches and Selectors
Switch/Selector Location Remove the display window using a standard screwdriver to access the
switches and selectors shown below.
Standard
screwdriver
Reset switch (SW2)
Indicator selector (SW3)
Mode selector (SW4)
Mode switch (SW5)
Switch/Selector Functions
Switch
No. Designation Function
SW 2 Reset switch The Unit can be reset and restarted by pressing the reset switch.
Note Resetting the Unit completely clears I/O bit status and data memory.
If the back panel DIP switch is set for PC-linked operation, the Unit will enter RUN or
PROGRAM mode after resetting, depending on the status of the PC. If the back panel
DIP switch is set for independent operation, the Unit will enter RUN, MONITOR (debug),
or PROGRAM mode, depending on the setting of SW4. The same process occurs when
the power is turned on.
SW 3 Display
selector Select indicator operation with this selector. Refer to the following pages for details.
SW 4 Mode selector Changing this selector followed by pressing and releasing SW5 will alter the operating
mode as shown below. This switch also determines the mode entered when power is
turned on or the Unit is reset.
SW 4 set to up position RUN.....
SW 4 set to center MONITOR (debug)........
SW 4 set to down position PROGRAM..
SW 5 Mode switch When this switch is pressed and released, the Unit will enter the mode set on SW4. The
operation of this switch is enabled by turning on pin 5 of the back panel DIP switch, and
disabled by turning off pin 5.
The Unit cannot be switched to RUN or MONITOR mode when the program is being
transferred from a Programming Device or an error has occurred.
     Section 2-1

$
Display Selector Switching the display selector (SW3) alters the indicator operation as follows:
SW3 Description Indicator Function
0Indicate operating mode 0RUN Lit during operation. Not lit in PROGRAM
mode.
1MONITOR
(debug) Lit in MONITOR (debug) mode. Not lit in RUN or PROGRAM mode.
2PROGRAM Lit in PROGRAM mode. Not lit during
operation.
3PC stop Lit while the PC is not in operation (either
in PROGRAM mode or in case of error).
4Error Lit to indicate an error during operation.
Refer to
6-1 Error Messages and
Troubleshooting
for details.
5High-speed
input 1 is
set.
Lit when external input bits 0200 through
0203 are set for high-speed inputs (Pin 3
of the DIP switch is turned on).
6High-speed
input 2 is
set.
Lit when external input bits 0204 through
0207 are set for high-speed inputs (Pin 4
of the DIP switch is turned on).
7Communica
ting Lit when the Unit is communicating with the GPC, FIT, or LSS.
1Indicate the status of output
bits 0000 to 0007 00000 Lit while corresponding output is ON.
10001
20002
30003
40004
50005
60006
70007
2Indicate the status of output
bits 0008 to 0015 00008 Lit while corresponding output is ON.
10009
20010
30011
40012
50013
60014
70015
3Indicate the status of input
bits 0100 to 0107 00100 Lit while corresponding input is ON.
10101
20102
30103
40104
50105
60106
70107
     Section 2-1

/
SW3 FunctionIndicatorDescription
4Indicate the status of input
bits 0108 to 0115 00108 Lit while corresponding input is ON.
10109
20110
30111
40112
50113
60114
70115
5Indicate the status of
external input bits 0200 to
0207
00200 Lit while corresponding input is ON.
10201
20202
30203
40204
50205
60206
70207
6Indicate the status of
external input bits 0208 to
0215
00208 Lit while corresponding input is ON.
10209
20210
30211
40212
50213
60214
70215
7Indicate the status of
external output bits 0300 to
0307
00300 Lit while corresponding output is ON.
10301
20302
30303
40304
50305
60306
70307
     Section 2-1

,
SW3 FunctionIndicatorDescription
8Indicate the status of
external output bits 0308 to
0315
00308 Lit while corresponding output is ON.
10309
20310
30311
40312
50313
60314
70315
9Indicate the year of the clock 0 8 x10
1The last two digits of the calendar year are
displayed. Data: 00 to 99
1 4
2 2
3 1
4 8 x10
0
5 4
6 2
7 1
AIndicate the month of the
clock 0------ Data:01to12 Indicators 0 through 2 are always OFF.
1------
2------
3 1 x10
1
4 8 x10
0
5 4
6 2
7 1
BIndicate the date of the clock 0------ Data:01to31
Indicators 0 and 1 are always OFF.
1------
2 2 x10
1
3 1
4 8 x10
0
5 4
6 2
7 1
     Section 2-1

0
SW3 FunctionIndicatorDescription
CIndicate the hour of the clock 0------ Data: 00 to 23 (24-hour clock)
Indicators 0 and 1 are always OFF.
1------
2 2 x10
1
3 1
4 8 x10
0
5 4
6 2
7 1
DIndicate the minutes of the
clock 0------ Data:00to59(minutes) Indicator 0 is always OFF.
1 4 x10
1
2 2
3 1
4 8 x10
0
5 4
6 2
7 1
EIndicate the seconds of the
clock 0------ Data: 00 to 59 (seconds) Indicator 0 is always OFF.
1 4 x10
1
2 2
3 1
4 8 x10
0
5 4
6 2
7 1
FIndicate the day of the week 0------ Data:00to06
Indicators 0 through 4 are always OFF.
1------ 00: Sunday; 01: Monday; 02: Tuesday;
2------ 03: Wednesday; 04: Thursday; 05: Friday;
3------ 06: Saturday
4------
5 4 x10
0
6 2
7 1
     Section 2-1


2-2 Back Panel DIP Switch
The DIP switch on the back panel sets the operating conditions of the Unit. All
pins are OFF at the time of delivery.
*2 *3 *4 Not used.
(Must be OFF.)
Not used
(Must be OFF.) *1
*1. PC Data Transfer
2Function
OFF Data transfer between the PC and this Unit is the same as
that for a standard 16-point I/O Unit.
ON Data transfer between the PC and this Unit is carried out
automatically via the I/O WRITE and I/O READ
(WRIT(87)/READ(88)) instructions.
*2. High-speed Inputs 1
3Function
OFF Sets external input bits 0200 to 0203 for standard inputs.
ON Sets external input bits 0200 to 0203 for high-speed
inputs. A pulse width of 0.5 ms or longer can be received.
*3. High-speed Inputs 2
4Function
OFF Sets external input bits 0204 to 0207 for standard inputs.
ON Sets external input bits 0204 to 0207 for high-speed
inputs. A pulse width of 0.5 ms or longer can be received.
*4. Independent Operation/Linked Operation
5Function
OFF Operates in the same mode as the PC when the PC is in
RUN or PROGRAM mode, but won’t enter MONITOR
mode. The Unit will be in RUN mode if the PC is in
MONITOR mode. Front panel switches 4 and 5 are
disabled.
ON Operating mode switched independently of PC operating
mode. Switches 4 and 5 (front panel) determine operating
mode.
Note 1. Refer to
Section3DataAreas for information about PC data transfer.
2. Refer to
Section 5 Program Execution Timing for information about
high-speed inputs 1 and 2.
3. RefertoS
ection4Programming and AppendixCProgrammingInstructions
for information about linked operation with the PC.
Caution If power is applied to the PC when pin 5 is OFF and the PC is set for RUN or
MONITOR mode, the LadderProgram I/O Unit will automatically switch to RUN
mode. If the Unit is communicating with the GPC , FIT, or LSS it will switch to
RUN mode when the operation is completed.
!  "  Section 2-2

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
3-1 IR (Internal Relay) Area
Data Word/bit address
16 bits (0000 to 0015)
Output bits as seen from the PC IR 00 Input bits as seen from the Unit. Cannot be used as work bits. The use of these bits depends on
the setting of pin 2 of the back panel DIP switch. Refer to
following subsections for details.
00 08
01 09
02 10
03 11
04 12
05 13
06 14
07 15
16 bits (0100 to 0115)
Input bits as seen from the PC IR 01 Output bits as seen from the Unit. Cannot be used as work bits. The use of these bits depends on
the setting of pin 2 of the back panel DIP switch. Refer to
following subsections for details.
00 08
01 09
02 10
03 11
04 12
05 13
06 14
07 15
16 external input bits
(0200 to 0215) IR 02 Bits 0200 to 0207 can be set for high-speed inputs. Cannot be used as work bits.
00 08
01 09
02 10
03 11
04 12
05 13
06 14
07 15
16 external output bits
(0300 to 0315) IR 03 Cannot be used as work bits.
00 08
01 09
02 10
03 11
04 12
05 13
06 14
07 15
"# $" #% & Section 3-1


3-1-1 Normal I/O Operation
When pin 2 of the back panel DIP switch is OFF, data is transferred through 2
wordsallocatedforI/O.Ifpin2isOFF,datacannotbenottransferredtoandfrom
the Ladder Program I/O Unit using the I/O WRITE and I/O READ
(WRIT(87)/READ(88)) instructions from the PC.
TheoutputbitdatainPC wordn(thefirstwordallocatedtothe Unitby thePC)is
input to word 00 in the Ladder Program I/O Unit. The bits of word 00 are treated
as input bits when programming the Ladder Program I/O Unit.
The input bit data inPC word n+1 is output from word 01 in the LadderProgram
I/O Unit. The bits of word 01 are treated as output bits when programming the
Ladder Program I/O Unit.
PC Word Allocation Unit Word Allocation
Bit No. IR n IR n+1 Bit No. Word 00 Word 01
Output Input Input Output
00 Output bit 00 Input bit 00 00 Input bit 00 Output bit 00
01 Output bit 01 Input bit 01 01 Input bit 01 Output bit 01
02 Output bit 02 Input bit 02 02 Input bit 02 Output bit 02
03 Output bit 03 Input bit 03 03 Input bit 03 Output bit 03
04 Output bit 04 Input bit 04 04 Input bit 04 Output bit 04
05 Output bit 05 Input bit 05 05 Input bit 05 Output bit 05
06 Output bit 06 Input bit 06 06 Input bit 06 Output bit 06
07 Output bit 07 Input bit 07 07 Input bit 07 Output bit 07
08 Output bit 08 Input bit 08 08 Input bit 08 Output bit 08
09 Output bit 09 Input bit 09 09 Input bit 09 Output bit 09
10 Output bit 10 Input bit 10 10 Input bit 10 Output bit 10
11 Output bit 11 Input bit 11 11 Input bit 11 Output bit 11
12 Output bit 12 Input bit 12 12 Input bit 12 Output bit 12
13 Output bit 13 Input bit 13 13 Input bit 13 Output bit 13
14 Output bit 14 Input bit 14 14 Input bit 14 Output bit 14
15 Output bit 15 Input bit 15 15 Input bit 15 Output bit 15
"# $" #% & Section 3-1