Western Reserve Controls 1782-JDO Manuel d'utilisateur télécharger pdf (Page 10)

Western Reserve Controls, Inc. 1782-JDO User’s Manual

PRELIMINARY

value is calculated by the JDO using the number of B1 devices you define in Parameter 4

and can be read from Parameter 5 in the Parameter Object and the EDS file. The default

value should be 4.

2. Map the data from your IO response to your scanners memory map.

i. The first byte indicates the status byte from the B1.

ii. The second byte contains the DI’s for channels 0-7.

iii. The third byte contains the DI’s for channels 8-15.

3. Direct the master to begin polling the JDO. The JDO will continuously issue Read Status

commands to the B1 and update the DeviceNet Poll Response (input data) with the input

data from the B1.

Table 2-1 JDO Input Data Format (10 B1’s)

BYTE B1 # MEANING

Byte 0 1

data byte, DI’s 0-7

Byte 1 1

data byte, DI’s 8-15

Byte 2 2

data byte, DI’s 0-7

Byte 3 2

data byte, DI’s 8-15

Byte 4 3

data byte, DI’s 0-7

Byte 5 3

data byte, DI’s 8-15

….

Byte 18 10

data byte, DI’s 0-7

Byte 19 10

data byte, DI’s 8-15

Byte 20 1

status byte

Byte 21 2

status byte

Byte 25 3

status byte

….

Byte 29 10

status byte

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 26 27

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Western Reserve Controls 1782-JDO Manuel d'utilisateur Page 10