IC695NIU001 是 GE Fanuc RX3i 系列的以太網(wǎng)網(wǎng)絡(luò)接口單元。該模塊可以在以太網(wǎng)上遠程使用 PACSystems RX3i 和 90-30 系列 I/O。

GE Fanuc IC695NIU001 以太網(wǎng)網(wǎng)絡(luò)接口單元

GE Fanuc IC695NIU001 以太網(wǎng)網(wǎng)絡(luò)接口單元

IC695NIU001技術(shù)規(guī)格

模塊類型：	網(wǎng)絡(luò)接口
插槽數(shù)：	1個（單槽）
背板支持：	雙：RX3i PCI 和 90-30 串行
協(xié)議支持：	SNP、Modbus 從站、串行 I/O、Modbus 主站
通訊端口：	(2) RS-232 和 RS-485
內(nèi)部電源：	0.52A @ 3.3 VDC，0.95A @ 5VDC

技術(shù)信息

IC695NIU001 PLUS 規(guī)格

實時時鐘電池壽命	預(yù)計5年。必須按照定期維護計劃每 5 年更換一次電池。筆記：該模塊在電池上帶有一個拉片。在安裝模塊之前，應(yīng)取下拉片。
電源要求	+3.3 VDC：標(biāo)稱 0.52 安培 +5.0 VDC：標(biāo)稱 0.95 安培
工作溫度	0°C 至 60°C（32°F 至 140°F）
浮點	是的
布爾執(zhí)行速度，典型值	每 1000 條布爾指令 0.072 毫秒
嵌入式通信	RS-232、RS-485
支持的串行協(xié)議	Modbus RTU Slave, SNP, Serial I/O, Modbus RTU Master by application “C” block
背板	雙背板總線支持：RX3i PCI 和 90-30 型串行
PCI 兼容性	系統(tǒng)設(shè)計在電氣上符合 PCI 2.2 標(biāo)準(zhǔn)
端口	RS-232 串口
端口	RS-485 串口建議使用外部隔離。（詳情請參閱RS-485 端口隔離器、IC690ACC903、 GRP-1663。）

故障排除

IC695NIU001 故障排除

IC695NIU001的網(wǎng)站頁面上提供了故障排除信息；它還包括數(shù)據(jù)表用戶手冊和接線圖。

如何檢查 PACSystem 中的強制值變量

描述

檢查 PACSysterm 中的強制值變量

解決

在 PACSystem 中的所有 CPU 模塊以及 IC695NIU001 模塊上，都有一個名為 I/O FORCE 的 LED。一旦 ME 中至少有一個強制位，LED 就會亮起。
在系統(tǒng)變量中，有一個 %S0011。一旦 ME 中至少有一個強制位，該系統(tǒng)位將被設(shè)置。
當(dāng)ME與PLC聯(lián)機時，我們通過右鍵單擊目標(biāo)名稱然后選擇報告在ME中找到控制器中的力報告。在這個報告中，我們可以找到強制變量的變量列表。
在 SVC_REQ 塊中，可以使用命令 18 來查看 ME 中是否存在強制值。

注意：對于#OVR_PRE 參考，指示一個或多個覆蓋是否處于活動狀態(tài)的%S00011 不受冗余CPU 支持且不應(yīng)使用。同時，冗余 CPU 上的 LED I/O FORCE 無法顯示是否存在一個或多個覆蓋。對于冗余系統(tǒng)，我們可以參考方法3和4來檢查強制值。

如何設(shè)置 EGD 通信的更新超時

描述

客戶應(yīng)在消費交換中設(shè)置正確的更新超時值

解決

對于 RX3i 和 ENIU(IC695NIU001) 應(yīng)用，消費者的更新超時應(yīng)至少是生產(chǎn)周期的 3 倍 + 2mSec。

請參閱 gfk-2439D 第 8-10 頁的表格，其中列出了建議的消耗超時值（注意所有超時值都是生成周期的 3x + 2mSec）。

筆記：

有關(guān) EGD 通信的更多詳細信息，請參閱 GFK-2224 PACS_Ethernet_Manual

有關(guān)以太網(wǎng)網(wǎng)絡(luò)接口單元的更多詳細信息，請參閱 GFK-2439 PACSystems RX3i 以太網(wǎng) NIU 手冊

與 IC695NIU001 進行交換的超時值

描述

RX3i ENIU (IC695NIU001) 能夠?qū)⑵漭敵鲈O(shè)置為默認(rèn)值或在與控制器的通信丟失時保持其狀態(tài)。這是通過使用“控制”字從控制器產(chǎn)生的交換來完成的。控制字定義為：

解決

控制數(shù)據(jù)格式

以太網(wǎng) NIU 消耗的前 10 個字是控制數(shù)據(jù)。它們確定通信丟失時的輸出行為，并可用于清除故障。此外，如果有兩個控制器，則控制數(shù)據(jù)決定了它們中的哪一個將提供 I/O 站輸出。（有關(guān)更多信息，請參閱 GFK-2439）。

一旦通信丟失，NIU 根據(jù)控制器發(fā)送的控制字中設(shè)置的某些位來確定輸出的狀態(tài)：

在確定正在從活動控制器接收數(shù)據(jù)后，以太網(wǎng) NIU 將離散和模擬輸出數(shù)據(jù)移動到 %Q 和 %AQ 表中。如果沒有可用的活動控制器，則 ENIU 根據(jù)來自一個活動控制器的控制位的指示，將零、保持狀態(tài)或默認(rèn)值移動到 %Q 和 %AQ 表中。

如果 NIU 的已消費交換的 Timeout 值設(shè)置為 0，這意味著交換永遠不會超時，則由控制字確定的狀態(tài)不會在 NIU 生效。

Troubleshooting

Troubleshooting IC695NIU001

Troubleshooting information is available on IC695NIU001's website page; it also includes a datasheet user-manual and a wiring diagram.

How to Check the Forced Value Variable in PACSystem

Description

Check the forced value variable in PACSysterm

Resolution

On all CPU modules in PACSystem, as well as the IC695NIU001 module, there is a LED named as I/O FORCE. And the LED will turn on once there is at least one forced bit in ME.
In the system variable, there is one %S0011. This system bit will be set once there is at least one forced bit in ME.
When ME goes online with PLC, we find a Forces in controller report in ME by right clicking target name and then choosing report. In this report, we can find out the variable list for the forced variable.
In the SVC_REQ block, the command 18 can be used to find out whether there is forced value in ME.

Note: For the #OVR_PRE reference, %S00011, which indicates whether one or more overrides is active, is not supported by the Redundant CPU and should not be used. At the same time, the LED I/O FORCE on the redundant CPU is not available to show whether there is one or more override. For the redundant system, we can just refer to the method 3 and 4 to check the forced value.

How To Set Update Timeout For EGD Communication

Description

Customer should set the proper Update Timeout value in the consumed exchange

Resolution

The Update Timeout of the Consumer should be at least 3x the Produced Period + 2mSec, for RX3i and ENIU(IC695NIU001) application.

Refer to gfk-2439D page 8-10 for a table listing the suggested consumed timeout values (notice all timeout values are 3x + 2mSec of the produced period).

Note:

More detail information about EGD communication, please refer to GFK-2224 PACS_Ethernet_Manual

More detail information about Ethernet Network Interface Unit, please refer to GFK-2439 PACSystems RX3i Ethernet NIU Manual

Timeout Value for Consumed Exchange with IC695NIU001

Description

The RX3i ENIU (IC695NIU001) has the ability to set its outputs to Defaults or to hold their last states when communications with the controller(s) is lost. This is done via the produced exchange from the controller(s) by using "Control" words. The Control Words are defined as:

Resolution

Control Data Format

The first 10 words of data consumed by the Ethernet NIU are control data. They determine the behavior of outputs if communications are lost, and can be used to clear faults. In addition, if there are two controllers, the control data determines which of them will supply the I/O Station outputs. (See GFK-2439 for more info).

The NIU determines the states of the outputs based on certain bits being set in the Control Word(s) being sent from the Controller(s) once communications are lost:

The Ethernet NIU moves the discrete and analog output data to the %Q and %AQ tables after determining that data is being received from an active controller. If no active controller is available then ENIU moves zeros, hold last state, or default values to the %Q and %AQ tables as directed by the control bit from the last active controller.

If the Timeout value for the consumed exchange(S) at the NIU are set to a value of 0, this means that the exchange never times out then the state as determined by the Control Word does not take effect at the NIU.