Rockwell-automation 1771-SPI,D17716.5.122 SPI PROTOCOL INTERFACE Uživatelský manuál stáhnout pdf (Strana 33)

Defining Command and Status Blocks

Chapter 3

3-11

Table 3.J

Bit/Word

Definitions of Custom Configuration Status (CCS)

Word

Number

Bit

Number

Title Range SPI Module:

0-7 Device ID 00100000 to 11111110 mirrors the SPIspecified device ID.

8-10

Determine

Configuration

(IDspecific)

100 = Store configuration >>

101 = Read configuration >>

110 = Overwrite configuration >>

111 = Clear configuration >>

If device ID matches a stored ID, SPI returns an error.

If SPI finds no matching ID, it returns an error.

If SPI finds matching ID, new config overrides old.

SPI returns a flag, and ignores all other data in CCB.

Clear All

0 = No action

1 = Clear all configurations

mirrors the CA command

Command Executed

0 = SPI module detected an error

1 = SPI executed the command

sets this bit to tell the PLC processor that the custom

configuration block (CCB) was stored without error.

13-15 Not used

If DC (Determine Configuration) bits 810 above = 101 = Read Configuration, then the SPI module returns words 2 up to 64 as follows.

(If the SPI module finds no matching ID (cannot read specified configuration), it indicates an error by zeroing words 2 up to 64.)

0-7

Number of

Bitcommand Words

0 to 60 decimal data mirrors the number of words containing bit commands

8-15

Number of

Numeric Setpoints

0 to 30 decimal data

mirrors the number of setpoints and/or alarm limits

If it detected an error, zeros this byte.

0-7

Number of

ASCII Strings

0 to 30 decimal data

reflects number of ASCII strings

If it detected an error, returns fault diagnostics.

8-15

Number of

Bitstatus Words

0 to 30 decimal data

mirrors the number of words containing bit status

If it detected an error, returns fault diagnostics.

0-7

Number of

Numericstatus Words

0 to 30 decimal data

mirrors the number of numericstatus words such as

temperature. If it detected an error, zeros this byte.

8-15

Number of

ASCIIstatus Strings

0 to 30 decimal data

mirrors the number of ASCIIstatus strings

If it detected an error, zeros this byte.

Starting

8-15 CMD1 starts at 00100000 20

mirrors the SPI code pair for the specified

bit command word sent to the SPI module

word 5

0-7

CMD2 starts at 00100010 22

bitcommand word sent to the SPI module.

For example: 20 49 for Mode, Machine

word

8-15 CMD1 starts at 00100000 20

mirrors the SPI code pair for the specified

numeric setpoint sent to the SPI module

word

pair

0-7

CMD2 starts at 00100010 22

numeric setpoint sent to the SPI module.

For example: 20 31 for Temperature Setpoint

word

8-15 CMD1 starts at 00100000 20

mirrors the SPI code pair for the specified

ASCII string sent to the SPI module

word

pair

0-7

CMD2 starts at 00100010 22

ASCII string sent to the SPI module.

For example, 20 22 for SPI Revision

word

8-15 CMD1 starts at 00100000 20

mirrors the SPI code pair for the specified

bit status word returned to the processor

word

pair

0-7

CMD2 starts at 00100010 22

bitstatus word returned to the processor.

For example, 20 44 for Status, Machine

word

8-15 CMD1 starts at 00100000 20

mirrors the SPI code pair for the specified

numeric status word returned to the processors

word

pair

0-7

CMD2 starts at 00100010 22

numeric status word returned to the processors.

For example, 20 72 for Process Temperature

word

8-15 CMD1 starts at 00100000 20

mirrors the SPI code pair for the specified

word

pair

0-7 CMD2 starts at 00100010 22

mirrors

the

SPI

code

pair

for

the

specified

ASCII status word returned to the processor.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 61 62

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