Table of Contents
Advertisement
The steps to change system date and time are as follows:
4. Write Level 1 Password to the SCADA Password holding register.
5. Write new system date and time value to the System Date register using
command 16 Preset multiple holding registers. See chapter I-4.a.i above for the
explanation of the register format.
6. Write 0 to the SCADA Password holding register.
The last step is optional; it ensures that write protection mechanism engages as soon as
write access is completed, without waiting for the timeout to expire.
See chapter 5.4 Passwords for the password value.
See chapter J-5 below for addresses of the Modbus registers.
J.5
Addresses Mapping
This Appendix contains tables that present the Hydran 201Ti addresses mapping for the
following:
• Coils: See Section J-5.a.
• Holding registers: See Section J-5.b.
• Strings: See Section J-5.c.
J.5.1 Address Mapping for the Coils
Table J-16 below presents the addresses mapping for the Binary Inputs.
columns contain the following information:
• Modbus Address: Modbus register address of the variable.
• Register Description: Name of the variable.
• Format: Type of format used by the data. See Section D.7 for details.
• Default Value: Default value of the variable.
Modbus
Register Description
Address
32823
Gas PPM High Relay state
32824
Gas PPM High High Relay state
32825
System OK Relay state
32826
Alarm_Gas_LL_Active
32827
Alarm_Gas_L_Active
32828
Alarm_Gas_H_Active
32829
Alarm_Gas_HH_Active
32830
Alarm_Hourly_LL_Active
Page 256
Hydran* 201i Instruction Manual
Format
Default
F1001
0 (Off)
F1001
0 (Off)
F1001
0 (Off)
F1002
0 (Off)
F1002
0 (Off)
F1002
0 (Off)
F1002
0 (Off)
F1002
0 (Off)
The
MA-033
Rev. 14.0, 12-Nov-18
Advertisement
Table of Contents
