AS-BDEP-254C模块备件

表33.车载RS-232C通道CI853–故障查找
故障、可能原因和纠正措施
PM8xx正在传输，而
Tx1/Tx2 LED闪烁，但
连接的设备不是
接收数据。
或
连接的设备是：
发送，但Rx1/Rx2
LED不闪烁。
•检查通信
接口电缆已连接。
•检查手抖动信号。
Tx/Rx信号闪烁
同时
传输，但信息
未正确接收
通过所连接的设备。
•检查波特率、奇偶校验和
数据和停止位的数量如下：
为连接的设备指定。
•检查握手程序
两端均按规定。
•检查驾驶员程序是否：
控制器和
连接的设备。
•断开控制器电源，
请稍等，然后通电
再一次
•停止程序并启动复位
来自PM8xx的信号（初始化）
处理器单元。
CI853支持热插拔。
PROFIBUS DP–CI854/CI854A第5节维护
214 3BSE036351-510 A
现场总线DP–CI854/CI854A
表34.PROFIBUS DP CI854/CI854A——故障查找
指示、可能的原因和纠正措施
R（un）和F（ault）
LED灯亮起
CI854/CI854A板正在进行以下操作：
正在重新启动或配置。留出时间
后确定。
如果条件持续存在，则
CEX总线具有不发光的LED：
•检查有效的硬件配置，包括：
CI854被下载到控制器。
•检查PM8xx内的CEX总线保险丝
处理器单元。
•从PM8xx启动复位信号（INIT）
处理器单元。
•更换CI854/CI854A装置。
F（故障）指示灯亮起。检查CI854板是否处于以下过程中：
正在重新启动。留出时间完成这项工作。
检查是否未报告任何配置故障
来自CBM中的CI854/CI854A。
如果状态保持不变，则启动复位信号（INIT）
来自PM8xx处理器单元。如果状态仍然
复位后仍然存在。更换CI854/CI854A
单元
RxA LED熄灭，线路A上无通信。
•检查从属设备是否已配置，以及
连接到该线路。
•如果使用冗余从设备，请检查
冗余工作正常。备份
slave必须回答生命列表请求
由船长发送。
•检查所有电缆和连接器是否损坏
以及连接松动或不良。
第5节维护PROFIBUS DP–CI854/CI854A
3BSE036351-510 A 215
RxB LED熄灭，线路B上无通信。
•检查从属设备是否已配置，以及
连接到该线路。
•如果使用冗余从设备，请检查
冗余工作正常。备份
slave必须回答生命列表请求
由船长发送。
•检查所有电缆和连接器是否损坏
以及连接松动或不良。
两个LED都熄灭
模块（仅限CI854A）
CI854A板正在进行
重新启动或配置。留出时间
后确定。
检查此模块的冗余是否已设置
在CBM中，并下载配置。Table 33. On-board RS-232C Channels CI853 – Fault-Finding
Fault Possible Cause and Corrective Action
The PM8xx is transmitting and the
Tx1/Tx2 LEDs are flashing, but
the connected device is not
receiving data.
OR
The connected device is
transmitting, but the Rx1/Rx2
LEDs are not flashing.
• Check that the communication
interface cable is connected.
• Check the hand-shake signals.
The Tx/Rx signals are flashing
concurrently with
transmission, but the messages
are not being received correctly
by the connected device.
• Check that the baud rate, parity, and
number of data and stop bits are as
specified for the connected device.
• Check that the handshake procedures
are as specified at both ends.
• Check that the driver routines are
adequate, both in the controller and
the connected device.
• Disconnect power to the controller,
wait a moment and then power-up
again.
• Halt the program and initiate a reset
signal (INIT) from the PM8xx
processor unit.
 CI853 supports hot swap. 
PROFIBUS DP – CI854/CI854A Section 5 Maintenance
214 3BSE036351-510 A
PROFIBUS DP – CI854/CI854A
Table 34. PROFIBUS DP CI854/CI854A – Fault-Finding
Indication Possible Cause and Corrective Action
Neither R(un) nor F(ault)
LED’s are ON
The CI854/CI854A board is in the process of
being restarted or configured. Allow time for this to
finalize.
If the condition persists, and all other units on the
CEX-bus have non-illuminated LEDs:
• Check that a valid HW configuration including
the CI854 is downloaded to the controller.
• Check the CEX-bus fuse inside the PM8xx
processor unit.
• Initiate a reset signal (INIT) from the PM8xx
processor unit.
• Replace the CI854/CI854A unit.
F(ault) LED is ON Check that the CI854 board is in the process of
being restarted. Allow time for this to finalize.
Check that there is no configuration fault reported
from CI854/CI854A in CBM.
If the status remains initiate a reset signal (INIT)
from the PM8xx processor unit. If the status still
remains after the reset replace the CI854/CI854A
unit.
RxA LED is OFF No communication on Line A.
• Check that slaves are configured and
connected to this line.
• If redundant slaves are used check that the
redundancy is working properly. The backup
slave has to answer to the life list requests
sent by the master.
• Check all cables and connectors for damage
and loose or poor connections.
Section 5 Maintenance PROFIBUS DP – CI854/CI854A
3BSE036351-510 A 215
RxB LED is OFF No communication on Line B.
• Check that slaves are configured and
connected to this line.
• If redundant slaves are used check that the
redundancy is working properly. The backup
slave has to answer to the life list requests
sent by the master.
• Check all cables and connectors for damage
and loose or poor connections.
DUAL LED is OFF on both
modules (CI854A only)
The CI854A board is in the process of being
restarted or configured. Allow time for this to
finalize.
Check that the redundancy for this module is set
within CBM and the configuration is downloaded.