Rockwell Automation 1760-DNET Pico DeviceNet Communications Module User Manual - Manual (Page 67)

Publication 1760-UM003A-EN-P - September 2005
Application Examples for Pico 6-23
Example:
Data 1 (Byte 4) = 0xA3, Data 2 (Byte 5) = 0x03
l Resulting 16-bit value = 03A3
hex
Meaning: HY, OS, F2, F1 are assigned a constant; I1, I2 are assigned to
a variable such as I7, I8 C2...etc., appears in the Parameter menu;
The output of the analog value comparator is active for as long as the
comparison (I1
x F1) + OS = (I2 x F2) + HY is fulfilled.
Counter relays: C1 – C16
Table 6.42 Index 01 – Control byte
FB output Data 3
Bit 7 6 5 4 3 2 1 0
– – – – – – –
Q1
(1)
(1) Status 1 if comparison condition is fulfilled.
Table 6.43 Telegram Structure
Byte Meaning Value (hex), sent by
Master Slave Master Slave
Attribute ID
Read 89 –
Write 8D –
0 Response:
Read successful – C2
Write successful – C1
Command rejected –
C0
(2)
(2) Possible causespage 6-34
0 1 Type 8F 8F
1 2
Instance
(1)
(1) Pico provides 16 counters C1 to C16 for use as required. These can be addressed using the instance (0 – F).
00 – 0F 00 – 0F
2 3 Index Table 6.44 Table 6.44
3 – 6 4 – 7 Data 1 – 4 depending on
index,Table 6.45 depending on
index,Table 6.45