CHAPTER 6: ACTUAL VALUES STATUS
B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-7
6
PORT 1…3 PTP STATE is the present state of the port’s PTP clock. The PTP clock state is:
• Disabled is the port’s function setting is Disabled
• No Signal if enabled but no signal from an active master has been found and selected
• Calibrating if an active master has been selected but lock is not at present established
• Synch’d (No Pdelay) if the port is synchronized, but the peer delay mechanism is non-operational
• Synchronized if synchronized
PTP - IRIG-B DELTA is the time difference, measured in nanoseconds, between the fractional seconds portion of the time
being received via PTP and that being received via IRIG-B. A positive value indicates that PTP time is fast compared to IRIG-
B time.
6.3.12 Direct inputs
ACTUAL VALUES STATUS DIRECT INPUTS
The
AVERAGE MSG RETURN TIME is the time taken for direct output messages to return to the sender in a direct input/output
ring configuration (this value is not applicable for non-ring configurations). This is a rolling average calculated for the last
ten messages. There are two return times for dual-channel communications modules.
The
UNRETURNED MSG COUNT values (one per communications channel) count the direct output messages that do not
make the trip around the communications ring. The CRC FAIL COUNT values (one per communications channel) count the
direct output messages that have been received but fail the CRC check. High values for either of these counts can indicate
on a problem with wiring, the communication channel, or one or more relays. The
UNRETURNED MSG COUNT and CRC FAIL
COUNT
values can be cleared using the CLEAR DIRECT I/O COUNTERS command.
The DIRECT INPUT 1 to DIRECT INPUT (256) values represent the state of each direct input.
6.3.13 Direct devices status
ACTUAL VALUES STATUS DIRECT DEVICES STATUS
DIRECT INPUTS
AVERATE MSG RETURN
TIME CH1: 0 ms
UNRETURNED MSG
COUNT CH1: 0
CRC FAIL COUNT
CH1: 0
AVERAGE MSG RETURN
TIME CH2: 0 ms
UNRETURNED MSG
COUNT CH2: 0
CRC FAIL COUNT
CH2: 0
DIRECT INPUT 1:
On
DIRECT INPUT 256:
On
DIRECT DEVICES
STATUS
DIRECT DEVICE 1
STATUS: Offline
Range: Offline, Online
DIRECT DEVICE 16
STATUS: Offline
Range: Offline, Online
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