Switching To Communications - Fuji Electric FRENIC-AQUA series User Manual

2.3

Switching to Communications

2.3.1 Functions for the switching
Figure 2.9 below shows a block diagram via communications for frequency setting and run
commands.
This block diagram indicates only the base of the switching section, and some settings may be
given higher priority than the blocks shown in this diagram or details may be different due to
functional expansion and so on. For details, refer to the FRENIC-HVAC/AQUA User's Manual.
Run commands herein include digital input signals via the communications link.
The setting of function code H30 (Communications link function (Mode selection)) selects the
command system to be applied when the communications link is valid.
Assigning the terminal command "Enable communications link" (LE)" to a digital input and
disabling the communications link (LE = OFF) switches the command system from the
communications link to other settings such as digital input from the terminal block.
In short, the frequency setting, run forward command, and X1 signal in Figure 2.9 switch from
communications dedicated function codes S01, S05, and S06 to terminals [12], [FWD], and [X1],
respectively.
Function code data can be read and written through the communications link regardless of the
setting of H30 (Communications link function (Mode selection)).
Reference
frequency
Communication
Host
Run forward
command
Digital input
Digital input (link
operation
selection)
Reference frequency
for communication
Reference frequency
for communication
Run command
Terminal FWD
(function selection)
Run command
Turned
ON at
98
Treminal REV
(function selection)
Run command
Turned
ON at
98
Run command 1
Figure 2.9 Command block diagram via communications
Link function
Bus link
function*1
to
Bus link
Link function
function*1
0.1
to
2,3
computing unit
Table of truth values of SO6
(bit 13, bit 14)) computing unit
-: Not assigned
(The value of the assigned bit will be output.)
Link function
Bus function*1
0.1
to
2,3
Depends on the set function.
2-16
Communications/Terminal
block switching
Frequency
setting
Loader link
function
Run forward
command
Loader link
function
Loader link
function
X1 signal