FATEK FBS-40EA Series - Page 82

2-4
Relay No. Function Description
3. Pulse Signals
◤M1920
0.01S Clock pulse T(M1920)=0.01S
◤M1921
0.1S Clock pulse T(M1921)=0.1S
◤M1922
1S Clock pulse T(M1922)=1S
◤M1923
60S Clock pulse
c
"1"
"0"
T
T is the pulse period
T(M1923)=60S
◤M1924
Initial pulse (first scan)
d
◤M1925
Scan clock pulses
e
◤M1926
Reserved
M1925
M1924
"STOP"
"RUN"
t
t
t
t
t
t is the scan time
◤M1927
CTS input status of communication
port 1
y 0：CTS True (ON)
y 1：CTS False (OFF)
y When communication port 1 is used to connect with the printer
or modem, it can use this signal and a timer to detect whether
the printer or the modem is ready.
4. Error Messages
◤M1928
Reserved
◤M1929
Reserved
◤M1930
No expansion unit or exceed the limit
on number of I/O points
y 1: Indicating no expansion unit or exceed the limit on number of
I/O points
◤M1931
Immediate I/O not in the main unit
range
y 1: Indicating that Immediate I/O not in the main unit range and
the main unit cannot RUN
◤M1932
Unused
◤M1933
System stack error y 1: Indicating that system stack error
◤M1934
│ Reserved
◤M1935
5.Port3～Port4 Controls（MC/MN）
M1936 Port 3 busy indicator y 0：Port 3 Busy
y 1：Port 3 Ready
M1937 Port 3 finished indicator y 1：Port 3 finished all communication transactions
M1938 Port 4 busy indicator y 0：Port 4 Busy
y 1：Port 4 Ready
M1939 Port 4 finished indicator y 1：Port 4 finished all communication transactions
c
d
e