GatesAir Intraplex DS-64NC, Инструкция по установке и эксплуатации

Страница: 28 / 68

DS-64NC Synchronous Data Module 2 – Functional Description
Version 9.1
2-16 GatesAir
Intraplex Products
Table 2-10. Remote Configuration Settings – P Codes (continued)
P
Code
Digit(s) and Switch
Equivalent Value* Description
P6
B00000000
↑↑↑ ↑↑
Register Select
(No switch
equivalent)
Select a performance register for inspection (inspecting
performance registers is done with a STATUS? query – Section
2.8.2 – S Codes) and, if desired, resetting:
00000 Current receive FIFO depth
00001 Receive FIFO underrun count since last reset
00010 Receive FIFO overrun count since last reset
00011 Receive bit error count since last reset
10000 Current transmit FIFO depth
10001 Transmit FIFO underrun count since last reset
10010 Transmit FIFO overrun count since last reset
B00000000
↑
-----
Reset
(No switch
equivalent)
Changing this digit from 0 to 1 resets the currently selected
performance register. On most registers, it resets the count to
zero; on a FIFO depth register, it resets it to the selected
starting depth (Register Select and BUFF settings).
NOTE: Change this digit back to 0 immediately after performing
a reset so that it can be used again. The 1 to 0 transition has no
effect on the module.
B00000000
↑↑
------
-- Not used.
* These values are the only legal ones for setting the parameters. Any parameter set to a value
outside its specified range produces an unpredictable result.
2.8.2.2 S Codes
S codes appear in response to a STATUS? query. There are four S codes for the DS-64NC module. Like
the P codes, each S code is an eight-digit binary number. A typical response to a STATUS? query looks
like this example:
* OK
CHANNEL CARD 3, TYPE 73
>>>ALERT or ALARM message here, if there is one<<<
S01 = 0 (B00000000)
S02 = 51 (B00110011)
S03 = 69 (B01000101)
S04 = 3 (B00000011);
S Code Status Conditions
These codes provide status information for several possible conditions on the module:
•
Presence of a configuration error; that is, a combination of data rate and starting time slot
that does not permit all data to fit into the time slots available, given the current settings for
system usage (T1 or 2 MB) and bits per time slot (56 or 64).
• Transmit and receive side DDS phase-locked loop (PLL) status; if one of these PLLs is not
locked, it indicates either a hardware failure or a signal failure.
• Shelf reference PLL status; when not locked, this code indicates either a hardware failure or
loss of Terminal Timing (in DCE operation) or Receive Timing (in DTE operation).
• I/O pin errors; the module monitors the output signals for transmit clock, receive clock,
receive data, and handshaking, and reports if any of these devices deviates from its expected
value. Which signals these errors represent depends on whether the module is equipped with
a DCE or DTE module adapter.