YOKOGAWA UTAdvanced Series, User Manual

Page: 668 / 866

14-11
IM 05P07A01-01EN
Functions and
Applications of D Registers (for UT75A)
14
14.4 UT75A D Registers

Bit Configuration of D2012: LA.ER (Ladder error status)
Bit Symbol Event
0 LAD_ERR Corrupted ladder program
1 LAD_OVER Ladder calculation overflow
2 LAD_P_ERR Ladder program error
3
4
LD100_OVER Load factor over 100%
5 LD200_OVER Load factor over 200% (Forced end)
6 to 15

Bit Configuration of D2013: ALM_L2 (Loop-2 alarm-1 to alarm-8 status)
Bit Symbol Event
0 ALM1_L2 ‘1’ when Loop-2 alarm 1 is ON; ‘0’ when OFF
1 ALM2_L2 ‘1’ when Loop-2 alarm 2 is ON; ‘0’ when OFF
2 ALM3_L2 ‘1’ when Loop-2 alarm 3 is ON; ‘0’ when OFF
3
4
ALM4_L2 ‘1’ when Loop-2 alarm 4 is ON; ‘0’ when OFF
5 ALM5_L2 ‘1’ when Loop-2 alarm 5 is ON; ‘0’ when OFF
6 ALM6_L2 ‘1’ when Loop-2 alarm 6 is ON; ‘0’ when OFF
7
8
ALM7_L2 ‘1’ when Loop-2 alarm 7 is ON; ‘0’ when OFF
9 ALM8_L2 ‘1’ when Loop-2 alarm 7 is ON; ‘0’ when OFF
10 to 15

Bit Configuration of D2018: PV2.E_L2 (Loop-2 PV input error status)
Bit Symbol Event
0 PVBO_L2 Loop-2 PV input burnout error
1 PV2BO_L2 Loop-2 PV2 input burnout error
2 CPV2BO_L2 Burnout error when the Loop-2 PV2 input is used for control.
3
4
PVPOVER_L2 Loop-2 PV input over-scale
5 PVMOVER_L2 Loop-2 PV input under-scale
6 to 13
14
ATERR_L2 Loop-2 auto-tuning timeout error
15

D2019 to D2023
Register
No.
Description Range and meaning of value
D2019 PV_L2 Loop-2 measurment value -5.0 to 105.0% of PV input range (EU)
D2020 CSP_L2 Loop-2 control setpoint
0.0 to 100.0% of PV input range (EU) (Setting
range: SPL to SPH)
D2021 OUT_L2 Loop-2 control output -5.0 to 105.0%
D2022 H.OUT_L2 Heating-side control output
-5.0 to 105.0% (In Heating/cooling control: 0.0 to
105.0%)
D2023 C.OUT_L2 Cooling-side control output 0.0 to 105.0%

Bit Configuration of D2024: MOD_L2 (Loop-2 operation mode status)
Bit Symbol Event
0 A.M_L2 0: AUTO, 1: MAN
1 R.L_L2 0: Local, 1: Remote
2 S.R_L2 0: Run, 1: Stop
3 to 13
14
AT_L2_ON 0: Auto-tuning is OFF, 1: Auto-tuning is ON
15