IS200DSPXH2D控制模块,机器人模块
如果无法响应主服务器的请求，网关将重新发送存储在缓冲区中的请求。如果超时重试设置为空（值为零），网关将不会缓冲主请求。如果指定的值不是零，网关将在缓冲区中存储Master请求，并重试发送指定次数的请求。重试完成后，网关将向主机发送Modbus错误消息。但是，如果选中0Bh异常框（见下文），则将发送基于0Bh十六进制代码的错误消息。值范围：0~5。0Bh异常默认未选中选中启用框，使网关能够向Modbus Master发送0Bh例外代码消息，以指示从设备在超时间隔内没有响应。默认情况下，Tx延迟未选中选中启用框，以在收到响应后激活最短时间，然后才能发送下一条消息。启用Tx延迟后，网关将在主请求之间插入Tx延迟。该延迟为从设备提供了足够的时间来关闭其发射机并重新打开其接收机。EW200工业蜂窝网关189设置TCP/IP连接以接收Modbus主请求以下Modbus TCP配置项允许用户设置TCP连接，以便远程Modbus主控器可以访问Modbus网关。它还允许用户指定TCP网络上的授权主机。项目值设置描述TCP连接空闲时间1。300默认设置为2。范围1到65535以秒为单位输入空闲超时。如果网关在空闲超时过去之前未收到TCP请求，则TCP会话将自动终止。值范围：1~65535。TCP连接1。4默认设置为2。范围1到4输入允许的同时TCP连接数。值范围：1~4。TCP保持活动默认情况下未选中“启用”框以确保TCP会话保持连接。默认选择Modbus Master IP Access Allow All（Modbus主IP访问允许全部）。指定TCP网络上的授权主机。选择Allow All（全部允许）以允许任何Modbus Master（Modbus主机）访问连接的从站。否则，通过选择“特定IP”，仅限制特定主机访问从属主机。选择“特定IP”后，将显示“受信任的IP定义”对话框。在TCP网络上指定受信任的Modbus主机当选择特定IP时，用户必须通过其IP地址指定主机，以到达串行连接的从设备。项目值设置描述源IP所需设置选择特定IP地址，以仅允许允许的主机的IP地址访问连接的从机。选择IP范围以仅允许所允许的主机访问IP地址的设置范围
t respond to the Master’s request, the gateway will resend the request stored in the buffer. If Timeout retries is set to null (value zero), the gateway will t buffer Master requests. If a value other than zero is specified, the gateway will store the Master request in the buffer and retry sending the request the number of specified times. Once the retries are exhausted, the gateway will send a Modbus error message to the Master. However, if the 0Bh exception box is checked (see below), a 0Bh hex code based-error message will be send instead. Value Range: 0 ~ 5. 0Bh Exception Unchecked by default Check the Enable box to enable gateway to send a 0Bh exception code message to Modbus Master to indicate that the slave device did t respond within the timeout interval. Tx Delay Unchecked by default Check the Enable box to activate the minimum amount of time after receiving a response before the next message can be sent out. When Tx Delay is enabled the Gateway will insert a Tx delay between Master requests. The delay gives sufficient time for the slave devices to turn their transmitters off and their receivers back on. EW200 Industrial Cellular Gateway 189 Setup TCP/IP Connection for Receiving Modbus Master Request The following Modbus TCP Configuration items allow user to set up the TCP connection so that the remote Modbus Master can access the Modbus gateway. It also allows user to specify authorized masters on the TCP network. Item Value setting Description TCP Connection Idle Time 1. 300 is set by default 2. Range 1 to 65535 Enter the idle timeout in seconds. If the gateway does t receive ather TCP request before the idle timeout has elapsed, the TCP session will be terminated automatically. Value Range: 1 ~ 65535. TCP Connections 1. 4 is set by default 2. Range 1 to 4 Enter the number of allowed simultaneous TCP connections. Value Range: 1 ~ 4. TCP Keep-alive Unchecked by default Check the Enable box to ensure to keep the TCP session connected. Modbus Master IP Access Allow All is selected by default. Specify authorized masters on the TCP network. Select Allow All to allow any Modbus Master to reach the attached Slave(s). Otherwise, limit only specific Master to reach the Slave(s) by selecting Specific IPs. When Specific IPs is selected, a Trusted IP Definition dialog will appear. Specify Trusted Modbus Masters on the TCP network When Specific IPsis selected, user must specify the Master(s) by their IP addresses to reach the serially attached Slave(s). Item Value setting Description Source IP Required setting Select Specific IP Address to only allow an IP address of the allowed Master to access the attached Slave(s). Select IP Range to only allow a set range of IP addresses of the allowed Master to access
