Description
PLC容量大小的选择包含I/O接口量和用户存储大小两个内容，I/O接口量估算时要考虑控制的余量，一般依照记录的I/O接口量，再扩展10%~20%的可发展余量后，作为I/O点数估算信息。用户存储大小通常依照数字量I/O接口量10-15倍
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