Woodward easYgen-2000 Series User Manual page 436

Application
Modbus Applications > Changing Parameter Settings > Configuration Of LogicsMan...
Describe the LogicsManager equa‐
tion as "command chain" in hex
code (step 2)
Fig. 220: LogicsManager command
chain words 0 and 1
Fig. 221: LogicsManager command
chain words 4, 5, and 6
Fig. 222: LogicsManager command
chain words 2 and 3
436
1. Define your LogicsManager equation
2. Describe the LogicsManager equation as "command chain"
in hex code
3. Send the message via Modbus
The LogicsManager screens below show parts of the command
chain. How to generate hex code words is described for each part
of the Modbus message.
Word 0 and word 1 contain the the hex code of the Delay times but
in the reverse order of double-byte words, i.e. low byte before high
byte.
Words 4, 5, and 6 contain the hex codes of the respective com‐
mand variable ID's decimal value but in the reverse order of
double-byte words, i.e. low byte before high byte.
The command variable prefix e.g., "04.13" is the
number of the command variable not it's ID.
Refer to Ä Chapter 9.4.4 "Logical Command Varia‐
bles" on page 556 for the command variable IDs.
Words 2 and 3 contain a sequence of nibbles each representing a
sign or operator of the equation.
The Data words table below shows the sequence how to arrange
the LogicsManager setting that build the command chain.
Word 2
Sign 1 Oper‐ Sign 2
ator 1
Table 87: Data words 2 and 3 - details of the logic equations
Please find the hex code equivalents on the table below:
Signs
"NOT" 0
"—" 1
"TRUE" 2
"FALSE" 3
easYgen-2200/2500 | Genset Control
Word 3
Oper‐ Sign 3 not
ator 2 used
Operators
"AND"
"NAND"
"OR"
"NOR"
not not
used used
0
1
2
3
37535B