I communicate in optimal operating environment. Depending on the electronic cassette (13) of the detection signal output from the detection pixel (65) or the comparison of the irradiation stop threshold and the accumulated value of the detection signal results between the radiation source control unit (11) and the electronic cassette (13) The communication unit for communicating the irradiation stop signal (80, 81), the communication speed is used relatively fast ones. Meanwhile, the communication unit for communicating image data and the like between the electronic cassette 13 and the console (14) (37), the communication speed detection signal, at a lower speed than in the case of the irradiation stop signal and which is performed by radio the I use.最適な動作環境で通信を行う。線源制御装置(11)と電子カセッテ(13)との間で電子カセッテ(13)の検出画素(65)から出力される検出信号、または検出信号の積算値と照射停止閾値の比較結果に応じた照射停止信号を通信する通信部(80、81)には、通信速度が比較的高速なものを用いる。一方、電子カセッテ(13)とコンソール(14)との間で画像データ等を通信する通信部(37)には、通信速度が検出信号、照射停止信号の場合よりも低速で、無線で行うものを用いる。
