IDEC MICROSmart FC6A Series User Manual page 352

6: D
EVICES
■ D8037: Number of Connected Expansion Modules
The number of expansion modules connected to the CPU module (I/O modules, PID modules, and communication modules) is
written to this register.
■ D8052: J1939 Communication Error Code
When an error occurs in J1939 communication, the error code is written to this register. For details on J1939 communication
error codes, see Chapter 8 "J1939 Communication Error Code (D8052)" in the "FC6A Series MICROSmart Communication
Manual".
■ D8056: Battery Voltage
The measurement result of the backup battery voltage is written to this register in 1 mV units.
0: Measurement error
■ D8057: Analog Volume (AI0)
The analog volume value is converted to a digital value and written to this register. For details, see "Analog Potentiometer" on
page 5-46.
■ D8058: Built-in Analog Input (AI1)
The analog input's analog value (0 to 10V DC) is converted to a digital value and written to this register. For details, see "Analog
Voltage Input" on page 5-44.
■ D8059: Analog Input Status AI0
The analog volume's analog input status is written to this register. For details, see "Analog Potentiometer" on page 5-46.
■ D8060: Analog Input Status AI1
The analog input's analog input status is written to this register. For details, see "Analog Voltage Input" on page 5-44.
■ D8067: Backlight ON Time
The backlight on time for the HMI module is written to this register. The backlight on time can be set by modifying the value of
D8067 in a range between 1 and 65,535 s. When D8067 is 0 s, the backlight is always on. The backlight on time can also be
changed with the HMI environment settings. For details, see "Setting the LCD Backlight ON Time" on page 7-13.
■ D8069 to D8099: Slave (1 to 31) Communication Status/Error
Special data registers used in data link communication. For details, see Chapter 7 "Master Station" in the "FC6A Series
MICROSmart Communication Manual".
■ D8040 to D8045, D8100, D8102, D8103, D8735 to D8758: Slave Number (Port 1 to 33)
The slave number is written to these registers when the Port 1 to 33 communication mode is maintenance communication,
Modbus RTU slave, or data link communication. The slave number can be changed by changing the value of the corresponding
device in Function Area Settings.
D8100 = Port 1 Slave No.
D8102 = Port 2 Slave No.
D8103 = Port 3 Slave No.
= Port 4 Slave No.
D8040
= Port 5 Slave No.
D8041
= Port 6 Slave No.
D8042
= Port 7 Slave No.
D8043
= Port 8 Slave No.
D8044
= Port 9 Slave No.
D8045
= Port 10 Slave No.
D8735
= Port 11 Slave No.
D8736
= Port 12 Slave No.
D8737
= Port 13 Slave No.
D8738
= Port 14 Slave No.
D8739
= Port 15 Slave No.
D8740
= Port 16 Slave No.
D8741
For details on communication modes, see the following in the "FC6A Series MICROSmart Communication Manual".
Maintenance communication: Chapter 4 "Maintenance Communication"

Modbus RTU slave: Chapter 6 "Modbus Communication"

Data link communication: Chapter 7 "Data Link Communication"

6-30 FC6A S MICROS U
ERIES MART
D8742 = Port 17 Slave No.
D8743 = Port 18 Slave No.
D8744 = Port 19 Slave No.
D8745 = Port 20 Slave No.
D8746 = Port 21 Slave No.
D8747 = Port 22 Slave No.
D8748 = Port 23 Slave No.
D8749 = Port 24 Slave No.
D8750 = Port 25 Slave No.
D8751 = Port 26 Slave No.
D8752 = Port 27 Slave No.
D8753 = Port 28 Slave No.
D8754 = Port 29 Slave No.
D8755 = Port 30 Slave No.
D8756 = Port 31 Slave No.
D8757 = Port 32 Slave No.
D8758 = Port 33 Slave No.
' M FC9Y-B1722
SER S ANUAL