
19
19.4 LED Indication and Maintenance Operation of
the Stand–Alone Type Unit
938
19.4.2 Maintenance operation method
19.4.2.1 Operation before power–on
Before turning on the power, select a function number by using the rotary
switch. When the power is turned on after the selection with the rotary
switch, the number corresponding to the selected function number is
indicated on the LED. The indication blinks at intervals of about one second.
D Function Number
Each function is assigned a number. This number is called a function
number hereinafter in this manual. The function numbers that can be
selected with the rotary switch are listed below. Do not set the reserved
function numbers. (If a reserved function number is set, the system
operates as if function number 0 were selected. However, a function may be
added in the future.)
Function
number
Explanation
0 Normal state. After terminating maintenance operation, al-
ways set this number.
1 Reserved
2 Sets a device number for the display link function.
3 Reserved
4 Confirms a device number for the display link function.
5 Memory all clear
6 Reserved
7 Reserved
8 Saves battery backed–up main board data in a memory card
at a time.
9 Reserved
A Restores battery backed–up main board data from a memory
card at a time.
B Reserved
C Reserved
D Reserved
E Reserved
F Reserved