P400寄存器翻译

S101

The Operating mode defines the role in the network a unit plays. A P400 modem may be configured for any role required within a radio network.

Master: Only one per network. In PP/PMP network types (see S133) data either originates at, is destined to, or passes through the Master.

Repeater: May act simply as a ?Repeater‘ to store and forward data to/from an upstream unit to/from a downstream unit (e.g. when there is a long distance between units), or, may act as a Repeater/Slave in which case the above function is performed AND the unit may also exchange data as a Slave within the network.

Slave: Interfaces with remote devices and communicates with Master either directly or via Repeater(s).

操作模式：定义一个节点在网络单元中的角色。P400调制解调器能在一个无线网络里面被配置成任意角色。 主站:每个网络只有一个。在PP / PMP网络中(见S133)数据或者是由主站生成传向目的地址,或者通过主站。 中继器:仅仅作为―中继器‖可以存储和转发到/从上行链路和到/从下行链路(例如,当节点之间有较长距离时)或者，作为一个与主机交换数据的从站。 从站:连接远程设备并直接或通过通信中继器通信

S102

The serial baud rate is the rate at which the modem is to communicate with the attached local

asynchronous device. This value must match the PC or serial device that is connected to data port on the P400.

When forcing a module to Command Mode the data port will temporarily communicate at the default value. When the P400 is retuned to Data Mode, the serial port settings are returned to those specified in S102 and S110.

串口波特率是调制解调器与连接在本地异步通信设备之间通讯的速率。这个值必须与连接到P400数据端口的串行设备或者PC相匹配。

当强制进入一个模块命令模式时，数据端口将暂时按照默认值通信。P400回到数据模式时,串口设置将按照S102和S110的值。

S103

This register determines the rate at which RF communications will occur over a given network. All modems within a particular network must be configured with the same wireless link rate. Faster link rates result in greater throughput, however, for each ‘step‘ increase in link rate, there is an approximately 1dB reduction in sensitivity.

这个寄存器决定了在一个给定的网络中的射频通信速率。所有在特定的一个网络里的调制解调器必须配置相同的无线速率。更快的链接速率导致更大的吞吐量,但是,对于每一级的的链接速度增量,灵敏度有一个大约1分贝的降低。

S104 (FH Modems)

All modems in a given network must have the same Network Address. This unique network address is not only a security feature for a particular network, but also allows other networks - with their own unique network address - to operate in the same area without the

possibility of undesired data exchange between networks.All modems in a given network must have the same Network Address.

所有同一个网络中的调制解调器必须具有相同的网络地址。 这种唯一的的网络地址不仅是一个特定网络的安全特征

,也是避免与在同一区域工作的且拥有自己的唯一的网络地址的其他网络之间的数据交换的可能性。

S105

The unit address is, and must be, a unique identifier of each modem in a network. The address value is 16-bits in length. The Master (FH) has by default, and must retain, a unit address of 1; 65535 is the broadcast address. Refer to the specific modem type for more information in regards to unit addressing. 单位地址是,且必须是一个网络里每个调制解调器的惟一标识符，是16位的字节长度的值。

在默认情况下,主站(跳频)的单元地址必须是1;65535是广播地址。参考专门的调制解调器资料获取地址介绍方面的信息。

S107静态掩码

This mask is applied to the transmitted data, and removed from the received data. It is an added form of security for a network.

静态掩码是应用于传输数据,然后从接收数据中删除。这是一个网络的附加的安全形式。

S108

This setting establishes the transmit power level which will bepresented to the antenna connector at the rear of the modem.Unless required S108 should be set not for maximum, but rather forthe minimum value required to maintain an adequate system fademargin.

这个设置将建立在调制解调器背面天线连接线处的发送功率的电平。除非特别说明S108不应设置为最大值,而是设置为保持一个足够的系统预衰减所需的最小值。

S109 (FH Modems) Hop Interval跳频间隔

This register is effective only on the Master and is responsible for establishing the rate at which all modems within a particular network change frequency (hop - from frequency to frequency). Long hop intervals typically result in the greatest data throughput, however shorter hop intervals may decrease latency, particularly of smaller packets of data.

The default setting of 20ms is satisfactory for most applications. If adjustment of S109 is being considered, also consider the serial baud rate, wireless link rate, and maximum packet size (S102, S103, and S112).

这个寄存器只有在主站上才有效,负责设置在一个特定的网络中的调制解调器的变频速率(hop——从一个频率跳变到另一个频率)。长跳间隔通常导致最大的数据吞吐量,然而短跳间隔减少延迟,尤其是较小的数据包。

20 ms的默认设置对于大多数应用程序是满足要求的。如果S109正在调整，同时也应该考虑串行波特率,无线连接速率和最大数据包大小(S102,S103、S112)。

S110 Data Format数据格式

This register determines the format of the data on the serial port. The default is 8 data bits, No parity, and 1 Stop bit. The value must match the PC or Serial Based device that is connected to the data port. When forcing a module to Command Mode the data port will temporarily communicate at the default value. When the P400 is retuned to Data Mode, the serial port settings are returned to those specified in

S102 and S110.

这个寄存器决定串行端口上的数据的格式。默认是8位数据位,没有奇偶校验位,1位停止位。这个值必须与连接到串行端口的串行设备或者PC相匹配。

当强制进入一个模块命令模式时，数据端口将暂时按照默认值通信。P400回到数据模式时,串口设置将按照S102和S110的值。

S111 Packet Min Size分组大小的最小值

This is the minimum number of collected bytes in one buffer before the buffer can be closed by the character timeout timer controlled by S116. Typically should not be modified.

这是缓冲区可以关闭前在一个缓冲区里面可以收集到的最小数量的字节数，这个时间是由S116控制的字符超时定时器决定的。通常不应该被修改。

S112 Packet Max Size分组大小最大值

Determines that maximum number of bytes from the connected device that should be encapsulated into a packet. Large packet sizes may produce the best data throughput; however, a smaller packet is less likely to become corrupted and, if it does, is retransmitted with a lesser impact on network traffic. The default setting of 256 bytes is suited to most applications.

确定来自于连接设备的最大字节数,应封装成包。大数据包大小可能产生最好的数据吞吐量,然而,一个更小的包不太可能会损坏,并且，重传时对网络流量的影响更小。256字节的默认设置是适合大多数应用程序。

S113 Packet Retransmissions分组重传

This register determines the maximum number of times that a packet will be retransmitted (in addition to the initial transmission). Retransmissions can be used to provide system robustness and to ensure data delivery due to noisy environments or weak signal levels. Retransmissions should not be used as the only means to correct for data collisions. Retransmissions create additional traffic and can have a significant impact on overall throughput of a system.

这个寄存器决定数据包的最大重传次数(除了最初的发送)。重发可以用于提供系统的强壮性和确保在嘈杂的环境中或微弱信号的环境中的数据交付。重传不应作为纠正数据碰撞的唯一手段。重发造成额外的流量,对系统的整体吞吐量产生重大影响。

S115 (FH Modems) Repeat Interval

In PP/PMP S115 determines the number of slots which are available within a window of opportunity for Remote units to submit channel requests to the Master modem. For a large number of remotes, the value of S115 should be set relatively high:

Remotes will randomly contend for the ability to access the channel request slots. For a small number of Remotes, it is advisable to keep S115 closer to the default value so as to not ?waste bandwidth‘ by maintaining a relatively large window housing a greater-than-necessary number of channel reservation request slots.

In a TDMA-type system, S115 may be set to 1 as the Remotes are not able to request a transmission channel: the Master polls each Remote for data.

在点对点/点对多点网络中，S115决定可用插槽的数量，在远端提交通道请求到主调制解调器的一个窗口的机会之内。对于远端数量较大，S115应设置的值相对较高。远端将随机争用访问通道插槽的请求。对于少量的远端,建议保持S115接近默认值,不浪费带宽的维持一个相对较大的窗口。

在TDMA-type系统中,当远端不能请求传输通道时，S115可以设置为1，主站轮巡每个远端数据。

S116 Character Timeout字符超时

Character Timeout in 1/4 of character time (0-255). Default = 10 (2.5 character time). This ?timer‘ looks for gaps in the data being received from the local attached device. The timer is activated after the Minimum Packet Size (S111, default 1 Byte) has been accumulated in the modem. If the timer detects a gap in the data exceeding the Character Timeout value, the modem will transmit the data.

The Pico will accumulate data in its buffers until either (a) Maximum Packet size (S112) has been accumulated, or (b) Minimum Packet Size (S111) has been accumulated AND the Character timeout has expired—whichever occurs first. If S116 is set to 0, the modem will buffer exactly the Minimum Packet size and then transmit that data.

时间超时1/4的字符(0 - 255)。默认= 10(2.5个字符时间)。这―定时器‖寻找来自本地的附加设备的数据间隙。计时器被激活后的最低数据包大小(S111、默认1字节)积累的调制解调器。如果定时器在数据中检测到一个超过字符值的间隙时,调制解调器将传输数据。

―Pico微系列‖将积累数据到缓冲区,直到(a)积累的最大数据包大小(S112),或(b)最小数据包大小(S111)已经积累或者字符超时先发生。如果S116设置为0,调制解调器将缓冲完全最低包的大小,然后传送这些数据。

S118 (FH Modems) Roaming

This feature allows a Remote unit to synchronize with a specified ?upstream‘ unit (either Master or Repeater). The options are as follows:

S118=65535: A Remote will synchronize with an upstream unit which has the same network address (S104) and static mask (S107) as the Remote. Should that upstream unit fail, this Remote will attempt to synchronize with another ‘upstream‘ unit within the same network. This ability is particularly well-suited to mobile applications.

这个特性允许远程单元与指定的―上行链路‖单元(主或中继器)同步。的选项如下:

S118 = 65535:远程单元会与具有相同的网络地址(S104)和静态掩码(S107)的上行链路单元同步，作为远程。如果上行单元失败,这个远端将尝试同步与同意网络中另一个―上行链路‖单元同步。这种能力是特别适合于移动应用。

S118=1-254: In most static (fixed) networks, where there are no Repeaters, the default value of 1 is maintained: All Slaves synchronize to the Master (whose unit address is 1).

In networks where Repeaters are present, the value of a Remote‘s S118 corresponds to the particular upstream modem with which a particular Remote is intended to communicate, e.g. Slave UA (S105)=3 may have an S118=2, where the modem with UA 2 is a Repeater between the Slave and the Master; the Repeater will have an S118=1.

S118 = 1 - 254:在大多数静态(固定的)网络,没有中继器,保持默认值1:所有从站同步到主站(主站单位地址是1)。

在有中继器的网络,一个上游远端从站的S118对应于他要与之通讯的调制解调器。例如单元地址=3的S118 =2,在这种情况下，单元地址=2的调制解调器是主站和从站之间的中继器，而单元地址=2的中继器S118 = 1。