产品标题:英维思-3503EN输入输出模块供应商
型号:英维思-3503EN
质保:七天验收期,质保期一年
品牌:英维思
产品图片展示
产品详情资料:
主机设置位14 LAY2_CTL_SAP_ENABLE,以启用第2层SAP服务。主机必须在发出联机命令之前设置此位。主机设置位15 LAY2_CTL_MSG_ENABLE,以启用第2层
消息服务。主机必须在发出联机命令之前设置此位。该卡在profi_usr结构中设置FDL全局状态寄存器lay2Status中的位,以显示第2层操作的总体状态。卡设置位14 LAY2_STS_ALL_SAP_OK,表示所有
配置的第2层SAP正常。卡设置位15,LAY2_STS_ALL_MSG_OK,表示所有
配置的第2层消息正常。主机通过以下方式控制消息传输和对SAP的在线更改
VMEPROFI结构中的触发队列vmeTrigQueue[256]。主机通过触发器队列头指针访问触发器队列,
vmeTrgHead,在VMEPROFI结构中。为了插入触发器,主机将适当的触发器值放入触发器队列的头部位置,然后增加头部指针
产品英文详情资料:
The host sets bit 14, LAY2_CTL_SAP_ENABLE, to enable the Layer 2 SAP service. The host must set this bit before it issues the online command. The host sets bit 15, LAY2_CTL_MSG_ENABLE, to enable the Layer 2
Message service. The host must set this bit before it issues the online command.The card sets bits in the FDL global status register, lay2Status, in the profi_usr structure, to show the overall status of layer 2 operations.The card sets bit 14, LAY2_STS_ALL_SAP_OK, to indicate that all
configured layer 2 SAPs are OK. The card sets bit 15, LAY2_STS_ALL_MSG_OK, to indicate that all
configured layer 2 messages are OK.The host controls message transmission and online changes to SAPs through
the trigger queue, vmeTrigQueue[256], in the VMEPROFI structure. The host accesses the trigger queue by means of the trigger queue head pointer,
vmeTrgHead, in the VMEPROFI structure. To insert triggers, the host puts the appropriate trigger value in the trigger queue at the head position, then increments the head pointer