YOKOGAWA UTAdvanced Series, User Manual

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14-139
IM 05P07A01-01EN
Functions and
Applications of D Registers (for UT75A)
14
14.5 Writing via Communication

Setting Target Setpoint
In LCL (local) mode
(1) Set the Loop-1 and Loop-2 target setpoints of groups 1 to 8 parameters (SP_L1_1
to SP_L1_8 or SP_L2_1 to SP_L2_8).
(2) Write the setpoint (1 to 8) in the SPNO. (SP number selection) (depends on the
setup parameter SPGR. setting)
(3) Set the operation mode (R.L_L1, R.L_L2) to LCL (local) (0).
Register No. Register symbol Description
D2312 SPNO. SP number selection
In REM (remote) mode
(1) The target setpoint can be written via communication only when the operation
mode (R.L_L1, R.L_L2) is set to REM (remote) mode.
(2) Write the setpoint in the C.RSP_L1 or C.RSP_L2.
Example: When setting 150.0
°
C for the C.RSP_L1, write “1500” to this register.
(3) Set the operation mode (R.L_L1, R.L_L2) to the REM (remote) mode.
Register No. Register symbol Description
D2331 C.RSP_L1 Loop-1 communication remote setpoint
D2332 C.RSP_L2 Loop-2 communication remote setpoint

Setting Control Output Value in MAN Mode
The control output value can be written via communication only when the operation
mode is set to MAN mode.
(1) Set the operation mode (A.M) to MAN (1).
(2) Write the control output value in the MOUT_L1, MOUT_L2, MOUTc_L1, or
MOUTc_L2.
Register No. Register symbol Description
D2333 MOUT_L1 Loop-1 heating-side control output in MAN mode
D2334 MOUTc_L1 Loop-1 cooling-side control output in MAN mode
D2335 MOUT_L2 Loop-2 heating-side control output in MAN mode
D2336 MOUTc_L2 Loop-2 cooling-side control output in MAN mode

Setting Manual Preset Output Number
The manual preset output number can be written via communication only when the
operation mode is set to MAN mode.
(1) Set the Loop-1 and Loop-2 manual preset output 1 to 5 parameters (MPO1_L1 to
MPO5_L1 or MPO1_L2 to MPO5_L2).
(2) Write the setpoint (1 to 5) in the MPON_L1 or MPON_L2.
(3) Set the operation mode (A.M) to MAN (1).
Register No. Register symbol Description
D3531 MPON_L1 Loop-1 manual preset output number selection
D4631 MPON_L2 Loop-2 manual preset output number selection

Operating a Valve (for Position proportional type only)
Write a valve position in MOUT_L1 in MAN mode for position proportional PID
computation.