Rockwell-automation 2711P Creating Modbus Applications Bedienungsanleitung PDF herunterladen (Seite 78)

Publication 2711P-UM002B-EN-P - March 2007

78 Modbus (RTU) Serial Address Definitions

Internal Registers

Defaults are shown in bold.

Arrays

Arrays are also supported for the internal register addresses. The

syntax for declaring an array (using decimal addressing) is 3xxxx[cols]

with assumed row count of 1 and 3xxxx[rows][cols].

For Word, Short and BCD arrays, the base address + (rows * cols)

cannot exceed 65536.

For Float, DWord, Long and Long BCD arrays, the base address +

(rows * cols * 2) cannot exceed 65535.

For all arrays, the total number of registers being requested cannot

exceed the internal register block size that was specified for this

device.

Internal Registers (Function Code 04)

Decimal Addressing Hexadecimal Addressing

Type Word, Short, BCD

Format 3xxxxx H3yyyyy

Security

Read only

(1)

For unsolicited device 127.0.0.1.0, these locations are Read/Write.

Range 300001 - 365536 H300001 - H310000

Type Boolean

Format 3xxxxx.bb H3yyyyy.c

Security

Read only

(1)

Range 3xxxxx.0 - 3xxxxx.15 H3yyyyy.0 - H3yyyyy.F

Type Float, DWord, Long, LBCD

Format 3xxxxx H3yyyy

Security

Read only

(1)

Range 300001 - 365535 H300001 - H3FFFF

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 91 92

Keine Kommentare

Rockwell-automation 2711P Creating Modbus Applications Bedienungsanleitung Seite 78