产品详细资料
计时器0、1和2这三个计时器在功能上是等效的。因此,将仅描述单个计时器。图4-5是计时器的框图。每个计时器功能独立。虽然控制字显示在计时器框图中,但它不是计时器的一部分,但其内容直接影响计时器的功能。如图4-5所示,当锁存时,状态寄存器包含控制字寄存器的当前内容以及输出和加载计数标志的当前状态(状态字可通过读回命令获得,请参阅第59页的“读取”部分)。计时器标记为TE(计时器元件)。它是一个16位同步可预置递减计数器。标记为OLM和OLL的块是8位输出锁存器(OL)。下标M和L表示高有效字节和低有效字节。这些锁存器通常跟踪TE,但当被命令时,将锁存并保持当前计数,直到CPU读取计数。当读取锁存计数时,OL寄存器将继续跟踪TE。读取OL寄存器时,必须执行两次8位访问以检索计时器的完整16位值,因为一次仅启用一个锁存器。TE无法读取;从OL寄存器读取计数。
The three Timers, Timer 0, 1, and 2, are functionally equivalent. Therefore, only a single Timer will be described. Figure 4-5 is a block diagram of a Timer. Each Timer is functionally independent. Although the Control Word is shown in the Timer block diagram, it is not a part of the Timer, but its contents directly affect how the Timer functions. The status register, as shown in Figure 4-5, when latched, contains the present contents of the Control Word Register and the present state of the output and load count flag (The Status Word is available via the Read-Back command, see the “Reading” section on page 59). The Timer is labeled TE (Timer Element). It is a 16-bit synchronous presettable down counter. The blocks labeled OLM and OLL are 8-bit Output Latches (OL). The subscripts M and L stand for Most Significant byte and Least Significant byte. These latches usually track the TE, but when commanded will latch and hold the present count until the CPU reads the count. When the latched count is read, the OL registers will continue to track the TE. When reading the OL registers, two 8-bit accesses must be performed to retrieve the complete 16-bit value of the Timer as only one latch at a time is enabled. The TE cannot be read; the count is read from the OL registers.
主营产品简介
专注于DCS、PLC、机器人控制系统、大型伺服四大系统领域。
主营产品各种模块/卡件,控制器,触摸屏,伺服驱动器。
优势:供应进口原装正品,专业停产配件,
发货快,货期精准,
主营品牌包括 ABB贝利、GE/FUANC、FOXBORO、英维思TRICONEX 、本特利BENTLY、A-B罗克韦尔、艾默生EMERSON 、OVATION、MOTOROLA、XYVOM、霍尼韦尔HONEYWELL 、力士乐REXROTH、KUKA、NI、DEIF、横河、伍德沃德WOODWARD、瑞恩、施耐德SCHNEIDER 、安川、 穆格MOOG、PROSOFT等品牌。
只卖库存产品;出完需订货!价格以客服说明为准!!订货货期以客服说明为准,有任何疑问请联繁客服! Limited stock, Contact US!
●使用前:
在操作和维护,安装设备之前,请阅读并严格遵守安全相关的信息。
Read and strictly follow safety-related information before operatingmaintainingand installing equipment.
●使用者要求:
必须从事安装,组装或维护设备等相关工控电气机械以及其他相关技术的人员。
Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.应用范围:
应用于品牌本系列工业以及生产生活自动化设备产品。
Used in the brand of this series of industriaand production automation eauipment products
适用于场景:系统集成,非标定制,产线升级改造,原设备电气替换等等。
Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.
●操作人员:
应该由本品牌专业培训操作员来安装、操作和维修设备。专业人员具有技术能力强,熟悉安全信息和安全实施:
熟悉设备的安装加工、操作和维护:熟悉处理所有的潜在危险情况。
Equipment should be installed,operated and maintained by trained operators from the brand
●危险情况
警告
.请注意使用人员的人身安全。
●除了产品特性以及功能,还需了解产品的使用寿命环境。
●充分学习产品使用手册,否则非专业人员可能会造成人身危险。
Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.
●服务行业
适用水泥,木业,石业,橡胶,石油,化工,发电,环保,水处理,制冷,交通,钢铁,食品,饮料,船舶,制冷等行业
Applicable to cementwood,stone,rubber,petroleumchemical, power generation