HIEE300900R0001處理控制模塊,HIEE300900R0001說明書在線閱讀
電流范圍默認(rèn)范圍為4至20 mA，用戶數(shù)據(jù)按比例縮放，使4 mA對應(yīng)于0和0的計數(shù)20 mA對應(yīng)32000計數(shù)。通過更改使用IC641配置器軟件或手持式編程器的配置參數(shù)?？梢耘渲梅秶?，使輸入范圍為0至20 mA，用戶數(shù)據(jù)縮放為0mA對應(yīng)于0的計數(shù)，20 mA對應(yīng)于32000的計數(shù)。全12位分辨率在4至20和0至20 mA范圍內(nèi)可用。也可以選擇4到20 mA的增強(qiáng)范圍。
HIEE300900R0001處理控制模塊當(dāng)選擇該范圍時，0 mA對應(yīng)對于–8000的計數(shù)，4 mA對應(yīng)于0（零）的計數(shù)，20 mA對應(yīng)于+32000。增強(qiáng)范圍使用與0至20 mA范圍相同的硬件，但自動提供4至20 mA范圍縮放，但提供負(fù)數(shù)字值的情況除外用戶輸入電流水平在4 mA和0 mA之間。這使您能夠選擇低報警限值，檢測輸入電流從4 mA降至0 mA的時間，這提供4至20 mA應(yīng)用中的開路故障檢測。報警上限和下限為適用于所有范圍?？梢曰诿總€通道配置范圍。該模塊還報告CPU的模塊狀態(tài)和用戶側(cè)電源狀態(tài)。電源要求和LED該模塊從PLC背板上的5V總線消耗120 mA，也需要65 mA加上用戶提供的+24V電源的電流回路電流（見表3-13，規(guī)格）。
HIEE300900R0001處理控制模塊模塊上有兩個綠色LED指示燈，用于提供模塊和用戶電源地位頂部LED，MODULE OK（模塊正常）在通電時提供模塊狀態(tài)信息，如下所示：跟隨：開啟：狀態(tài)正常，模塊已配置；關(guān)閉：沒有背板電源或軟件未運行（看門狗計時器超時）；連續(xù)快速閃爍：未從CPU接收到配置數(shù)據(jù)；緩慢閃爍，然后關(guān)閉：通電診斷失敗或遇到代碼執(zhí)行錯誤。底部LED“用戶電源正?！敝甘居脩籼峁┑?4V電源在從而使模塊的模擬側(cè)能夠正常工作
Current Ranges
The default range is 4 to 20 mA with user data scaled so that 4 mA corresponds to a count of 0 and
20 mA corresponds to a count of 32000. The other ranges are selected by changing the
configuration parameters using the IC641 configurator software or the Hand-Held Programmer.
The range can be configured so that the input range is 0 to 20 mA with user data scaled so that 0
mA corresponds to a count of 0 and 20 mA corresponds to a count of 32000. Full 12-bit resolution
is available over the 4 to 20 and 0 to 20 mA ranges.
A 4 to 20 mA Enhanced range can also be selected. When this range is selected, 0 mA corresponds
to a count of –8000, 4 mA corresponds to a count of 0 (zero) and 20 mA corresponds to a count of
+32000. The Enhanced range uses the same hardware as the 0 to 20 mA range but automatically
provides 4 to 20 mA range scaling with the exception that negative digital values are provided to
the user for input current levels between 4 mA and 0 mA. This gives you the capability of
selecting a low alarm limit that detects when the input current falls from 4 mA to 0 mA, which
provides for open-wire fault detection in 4 to 20 mA applications. High and Low alarm limits are
available on all ranges. Ranges can be configured on a per channel basis. The module also reports
module status and user-side supply status to the CPU.
Power Requirements and LEDs
This module consumes 120 mA from the 5V bus on the PLC backplane and also requires 65 mA
plus current loop current(s) from a user supplied +24V supply (see Table 3-13, Specifications).
There are two green LED indicators on the module which provide module and user supply
status. The top LED, MODULE OK provides module status information on power-up as
follows:
ON: status is OK, module configured;
OFF: no backplane power or software not running (watchdog timer timed out);
Continuous rapid flashing: configuration data not received from CPU;
