Det-tronics Mac - w/Supercard Manual de usuario descargar pdf (Pagina 32)

MEMORY MAP OVERVIEW

Datatable configuration defines the PLC/Gateway addresses that the OIS

will read.

The gateway memory accessible to the OIS emulates a data table in reg-

ister memory on a generic Modicon PLC. Each address is 16 bits wide

(two contiguous bytes).

The gateway supports up to 250 devices. Each device is allotted five 16

bit words of memory in the “datatable”.

■

Two words of “A” memory (type code and configuration

word) normally not read, for diagnostics only.

■

One word of “B” memory (device control words).

■

One word of “C” memory (diagnostics and status).

■

One word of “D” memory (current value of the process vari-

able).

■

“E” memory is used to transfer information to or from any

individual communication module.

■

"F” memory contains “last direction” diagnostic informa-

tion.

At least one datatable must be properly configured and enabled before

the “point display” feature will operate.

Datatable Configuration ( )

2.19

95-8434

ADDRESS 40002 - 40502

CONTAINS DEVICE TYPE CODES AND

DEVICE CONFIGURATION CODES AS

DEFINED IN NON-VOLATILE MEMORY

ADDRESS 44098 - 44347 CONTAINS 1 

WORD OF PROCESS VARIABLE DATA 

FOR DEVICES 1 - 250

ADDRESS 42050 - 42299

CONTAINS A DEVICE CONTROL WORD

FOR DEVICES 1 - 250

46143 - EOF

INTERNAL DIAGNOSTICS, WORKING

FILES, AND FUTURE FEATURES

4 KBYTES

2 KBYTES

ADDRESS 45121 - 46142

TRANSFER BUFFER FOR MOVING

RECORDS TO AND FROM THE HOST

AND LON DEVICES

2 KBYTES

ADDRESS 43074 - 43323

CONTAINS A DEVICE STATUS WORD

FOR DEVICES 1 - 250

2 KBYTES

A1532

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 75 76

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