Arrow VM1012-B Especificações descarregar pdf (Página 31)

4-18 OPERATION CHAPTER 4

DT-203X, DT-105X and DT-110X display series

4.4.3.3. Set a message with variables.

When you want to set a message with variables, you should put the Message Number

into a free place on the DM table, between positions DM n+6 and DM n+9. If more than one

message is set, the position into the table is used to control the order in which messages will be

displayed.

Using Messages with variables, besides the message number, you must program the

position where the variable will be found inside the PLC. Programm the position and the DM

number from DM n+10 to DM n+17. Every one of the four messages with variables has 2 DM’s

for variable data. These 2 DM’s work as indirect addressing, first DM has the address where the

data is located while the second DM has the number of DM used.

Example.

DM parameter = 100

DM 106

DM 107

DM 108

DM 109

The DM associated value must be in BCD.

DM107 = 25 Set message 25.

DM107 Address of Variable Data in DM112 and DM113.

DM112 = 535 => Variable data in DM535

DM113 = 3 => 3 DM used. DM535, DM536 and DM537.

DM535 to DM537 = Variable data. ( See 4.4.3.6 Data variables.)

4.4.3.4. Reset a message with variables.

To reset a message with variables, you must set its position on the table to 0 or change

the message number for the other message number.

4.4.3.5. Reset all messages .

To reset all messages, you must set all positions from DM n to DM n+9 to 0.

4.4.3.6. Data variables.

The data variables must be placed into groups of consecutive VM’s for each

message.You may use only one group of VM’s for all messages or use a different group of VM’s

for each message.

The variable data block structure is:

First DM

Second DM

..........................

Last DM

Position of

variable

Number of

characters

4 characters

variable

4 characters

variable

4 characters

variable

The position of each character variable in the message is defined at edition time.

Position 1 corresponds to the variable character furthest to the left in line 1. Line 1 is the top line

in displays of more than one line.

DM 110

XXXXX

DM 111

XXXXX

DM 112

535

DM 113

DM 114

XXXXX

DM 115

XXXXX

DN 116

XXXXX

DM 117

XXXXX

DM 535

Variable

data

DM 536

DM 537

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 37 38 39

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