B&R 7AT664.70數(shù)字量輸出模塊，7AT664.70使用過(guò)程
MVME172LX安裝了172Bug固件。對(duì)于固件要與電路板一起正常工作，必須遵循以下步驟在下面在通電的情況下插入或卸下電路板可能會(huì)損壞電路板組件。1、關(guān)閉所有設(shè)備電源。參考MVME172LX第1-4頁(yè)的配置和標(biāo)題上的跳線配置為對(duì)于您的特定應(yīng)用程序是必要的。a、 標(biāo)頭J21的跳線塊包含八個(gè)位，它們都是影響B(tài)ug操作。它們作為寄存器讀取（在位置$FFF4202D）。
B&R 7AT664.70數(shù)字量輸出模塊（MVME172 VME嵌入式控制器程序員參考指南包含有關(guān)MC2chip的其他信息。）當(dāng)對(duì)應(yīng)的跳線為時(shí)，位值讀取為0已安裝，或在拆下跨接導(dǎo)線時(shí)為1。MVME172LX上J21的默認(rèn)配置為安裝了七條跳線（針腳9-10之間沒(méi)有跳線）。172Bug固件保留/定義四個(gè)低階位（GPI3到GPI0）。表2-2描述了J21上的位分配。b、 通過(guò)在兩個(gè)接頭之間安裝/拆卸跨接導(dǎo)線來(lái)配置收割臺(tái)J1針腳1和2。安裝/拆除跳線可啟用/禁用MVME172LX上的系統(tǒng)控制器功能。2.有關(guān)詳細(xì)信息，請(qǐng)參閱特定機(jī)箱或系統(tǒng)的設(shè)置程序有關(guān)MVME172LX安裝的詳細(xì)信息。3、連接用作系統(tǒng)的終端控制臺(tái)上的串行端口1處的默認(rèn)調(diào)試EIA-232-D端口MVME172LX的前面板。請(qǐng)參閱中的串行連接第1章了解其他連接選項(xiàng)。將終端設(shè)置為跟隨：–每個(gè)字符8位–每個(gè)字符一個(gè)停止位–奇偶校驗(yàn)禁用（無(wú)奇偶校驗(yàn)）–波特率9600波特（MVME172LX端口的默認(rèn)波特率通電時(shí)）通電后，您可以重新配置調(diào)試端口的波特率通過(guò)使用172Bug端口格式（PF）命令。
The MVME172LX comes with 172Bug firmware installed. For the
firmware to operate properly with the board, you must follow the steps
below. Inserting or removing boards with power applied may damage
board components.
1. Turn all equipment power OFF. Refer to MVME172LX
Configuration on page 1-4 and configure jumpers on headers as
necessary for your particular application.
a. The jumper block for header J21 contains eight bits, which all
affect 172Bug operation. They are read as a register (at location
$FFF4202D) on the MC2chip ASIC. (The MVME172 VME
Embedded Controller Programmer’s Reference Guide contains
additional information on the MC2chip.)
The bit values are read as a 0 when the corresponding jumper is
installed, or as a 1 when the jumper is removed.
The default configuration for J21 on the MVME172LX has
seven jumpers installed (no jumper between pins 9-10).
The 172Bug firmware reserves/defines the four lower order bits
(GPI3 to GPI0). Table 2-2 describes the bit assignments on J21.
b. Configure header J1 by installing/removing a jumper between
pins 1 and 2. A jumper installed/removed enables/disables the
system controller function on the MVME172LX.
2. Refer to the setup procedure for your particular chassis or system for
details concerning the installation of the MVME172LX. 3. Connect the terminal that is to be used as the 172Bug system
console to the default debug EIA-232-D port at serial port 1 on the
front panel of the MVME172LX. Refer to Serial Connections in
Chapter 1 for other connection options. Set the terminal up as
follows:
– Eight bits per character
– One stop bit per character
– Parity disabled (no parity)
– Baud rate 9600 baud (default baud rate of MVME172LX ports
at powerup)
After power-up, you can reconfigure the baud rate of the debug port
by using the 172Bug Port Format (PF) command.
