Rockwell-automation 2711P Creating Modbus Applications Manual de usuario descargar pdf (Pagina 70)

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

70 Modbus ASCII Address Definitions

Internal Registers

Defaults are shown in bold.

Arrays

Arrays are also supported for the internal and holding 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

Decimal Addressing

Type Word, Short, BCD

Format 3xxxxx

Security

Read only

(1)

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

Range 300001 - 365535

Type Boolean

Format 3xxxxx.bb

Security

Read only

(1)

Range 3xxxxx.0 - 3xxxxx.15

Type Float, DWord, Long, LBCD

Format 3xxxxx

Security Read only

Range 300001 - 365534

1 2 ... 65 66 67 68 69 70 71 72 73 74 75 ... 91 92

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Rockwell-automation 2711P Creating Modbus Applications Manual de usuario Pagina 70