5-8
Link commands
In link command allowed mode, you can use function code H30 (link function) to link (COM) the
command data and the run operation command, and switch between Remote and Local. At this time,
REM (Remote: run operation via terminal block) or LOC (Local: run operation via keypad) is
displayed.
Link command allowed mode
H30 data
Command data (S01-S05, S10-S12) Run operation command (FWD, REV)
Link command disallowed
mode
0 Disallow link (REM/LOC) Disallow link (REM/LOC)
1 Allow link (COM) Disallow link (REM/LOC)
2 Disallow link (REM/LOC) Allow link (COM)
3 Allow link (COM) Allow link (COM)
Disallow link (REM/LOC)
These functions enable a flexible system structure, with run commands issued via the terminal block
and speed commands issued via RS-485.
5.1.5.2 Link edit permission selection
Link edit switching
You can write protect the function codes (F, E, C, P, H, A, o, L, U) as shown below by assigning
"23: Allow link edit command [WE-LK]" to the X function input terminal.
Allow link edit command assignment Input terminal Status
Assigned -
ON
Link edit allowed mode
(Function code write enabled)
Not assigned
OFF Link edit disallowed mode
(Function code write protected)
Link edit
You can use function code H29 (allow link edit command) to control writing to function codes (F, E,
C, P, H, A, o, L, U) in the link edit allowed mode.
H29 data Link edit allowed mode Link edit disallowed mode
0 Function code (F, E, C, P, H, A, o, L, U) write enabled
1 Function code (F, E, C, P, H, A, o, L, U) write protected
Function code (F, E, C, P, H, A, o, L, U) write
protected
5.1.5.3 S range option priority
If the system has field options (T link, field bus, SX, SI (UPAC), etc.), writing to the S range (run
operation command, command data) via RS-485 is disabled and the options are given priority.
However, reading and writing function code data via RS-485 is constantly enabled.
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